Chestnut Herbal School

Herbal Infusions and Decoctions:
Preparing Medicinal Teas

Written and Photographed by Juliet Blankespoor

“Drink your tea slowly and reverently, as if it is the axis on which the world earth revolves - slowly, evenly, without rushing toward the future.”
~Thich Nhat Hanh

If you’ve ever made a cup of tea with a teabag then you’ve made an herbal infusion. Teabags are certainly convenient, but if you want to prepare your own herbal blends or concentrated medicinal teas, then learning how to use dried herbs, in the form of infusions and decoctions, is indispensable. Buying herbs in bulk, or growing and gathering your own, is also substantially cheaper than purchasing teabags. Personally, I love the sensory pleasures of preparing dried herbs— homemade tea blends enhance my enjoyment of each herb’s texture, color and aroma.

Before we delve into the details of tea preparation let’s take a look at the benefits and downsides of water extraction as a delivery method for medicinal botanicals. Tea is one of the most ancient forms of medicine and can be very comforting and pleasurable to drink. It is cheaper than capsules or tinctures (alcohol extracts) and the body is able to assimilate it easily. Many medicinal herbs have a strongly unpleasant flavor, so most people opt to ingest these herbs in the form of capsules or tinctures. Certain herbs, however, can help to mask these bitter flavors: cinnamon (Cinnamomum verum and cassia , Lauraceae), cardamom (Elettaria cardamomum, Zingiberaceae), and licorice (Glycyrrhiza glabra, Fabaceae) are a few examples. Medicinal teas also have the added benefit of hydration, except, of course, if the herbs are diuretic (promote water loss). In addition, teas are a better choice than tinctures for those who want or need to avoid alcohol. Water is an excellent solvent for minerals, mucilage, volatile oils, and most medicinal constituents, although it doesn’t easily extract resins or some alkaloids. For that reason, alcohol is the preferred solvent for resinous herbs, such as poplar buds or balm of gilead (Populus spp., Salicaceae).

If you have the time, make your tea fresh daily. I will typically prepare a quart of tea in the morning and slowly sip on it all day. It is easy to bring your tea out and about with you in a glass mason jar, thermos, or stainless steel beverage container. Tea will keep fresh at room temperature for about twelve hours, and then it will develop an off or stale flavor. Many people find it more convenient to make three days worth of tea at a time, and while the tea is not as fresh, it is a viable option if it makes the difference between drinking tea or not. You can make a triple batch of tea and place it in the refrigerator. It is then easy to heat up individual cups of tea. Many beverage teas are quite enjoyable cooled in the summer heat, and if you have a big batch in the refrigerator it is easy to reach for a cup. Also, consider preparing ice cubes of herbal tea. I freeze hibiscus (Hibiscus sabdariffa, Malvaceae) and schisandra (Schisandra chinensis, Schisandraceae) tea into ice cubes, and then on busy days I pop them into my water container as I’m heading out the door.


An herbal infusion is made from lightweight plant material— namely leaves, flowers and fruits. Herbs with a high percentage of volatile oils are also typically prepared as an infusion, even if they are thicker plant parts like roots and bark. The infusion can be prepared in a French press, stainless steel pot, ceramic or glass teapot, or a stainless steel or bamboo infuser. Some herbalists use mason jars for their infusions but I do not recommend this practice as mason jars can sometimes have cracks and break when exposed to boiling water. If you really want to use a mason jar, make sure to place it in the sink when you pour your water in case it breaks. An infusion is prepared by bringing the desired amount of water to a boil, pouring it over the herb, and letting it sit covered, for twenty minutes. After straining the herb, the tea can be drunk immediately, or cooled to room temperature and refrigerated.

Tangerine peel and Sarsparilla root herbal decoction

Tangerine peel and Sarsparilla root herbal decoction


A decoction is basically a simmered tea and is the preferred form of preparation for bark, roots, medicinal mushrooms, and hard non-aromatic seeds. Decoctions are typically made in a stainless steel or stovetop-safe glass pot. The herb is placed in water and brought to a boil, then simmered with a lid on for 20 minutes to a half hour. Take off the heat, strain and enjoy. It is possible to simmer your decocted herbs again for a few more rounds; as long as they are still yielding a strong tasting tea, they are still good. Store your roots in the refrigerator between decoctions to reduce microbial growth. If you are making a tea mixture containing herbs to be infused and decocted, simply make your decoction, turn off the heat, and add your herbs to be infused.

Proportions for Herbal Infusions and Decoctions

Folk method: Here is a general guideline in figuring herbal proportions: 1 teaspoon of dried, cut and sifted herb, or herbal formula, or 2 tablespoons of fresh herb per 8 ounces of water. Note this strength is not exact as different herbs have varying densities and surface area. (This is a volume measurement and not a weight measurement) Alternately, many herbalists use the following proportions: one handful of an herb or herbal blend to one quart of water. Typically a daily dose would comprise of three to four cups of tea. This form of loose measurement is fine for most situations, but is not appropriate for herbs that have a high potential for side effects. After you gain a greater familiarity with each herb, you will easily be able to throw together a daily herbal tea blend without even thinking— it becomes second nature.

Weight method: .5-5 grams of dried herb, or herbal combination, for every 1 cup of water (Note this is a more exact measure since it is using weight). The dosage is typically one cup (8 ounces) of tea three times a day. When using multiple herbs in a formula, decrease the amount of each individual herb. The dosage varies depending on the herb(s) being employed; you will want to research each herb and it’s particular dosage. Another factor is the person’s constitution – if the individual is weak or sensitive, smaller dosages will be needed. Experiment with herbs as simples (single herbs) so as to familiarize yourself with each botanical’s unique flavor and aroma.

Some herbs are generally very safe and are used as food, examples are: chickweed (Stellaria media, Caryophyllaceae), hibiscus (Hibiscus sabdariffa, Malvaceae), burdock (Arctium lappa and minus, Asteraceae), violet (Viola spp., Violaceae), nettles (Urtica dioica, Urticaceae), rosehips (Rosa spp., Rosaceae) and hawthorn (Crataegus spp., Rosaceae). The proportions of these teas are more flexible.  Pungent herbs such as clove (Syzygium aromaticum, Myrtaceae), cayenne (Capsicum annuum, Solanaceae), and black pepper (Piper nigrum, Piperaceae) will obviously have a smaller dosage and a more pronounced effect on the imbiber. Note that the above proportions are typical in western herbalism, however, many traditional forms of medicine, such as Ayurveda or TCM, favor more concentrated medicinal teas. I tend to use higher dosages than most other western herbalists, especially in acute situations, as I have more success with stronger medicine. That said, stronger is not always better. Find your own strategies; use common sense, research, your senses and intuition. Many herbs, including beverage teas, can have adverse reactions when combined with pharmaceuticals; consult a trusted health care practitioner if you have concerns.

Determining dosage in children by weight

To determine the child’s dosage by weight, you can assume that the adult dosage is for a 150-pound adult. Divide the child’s weight by 150. Take that number and multiply it by the recommended adult dosage. For example, if your child weighs 50 pounds, she will need one-third the recommended dose for a 150-pound adult. If the adult dosage is three droppers full of a tincture, she will need one third of that dose, which is one dropper full (⅓ of 3 droppers full). A 25-pound child would need one-sixth the adult dose, so he would receive one half of a dropper full (⅙ of 3 droppers full).

Herbal Infusion of fresh rose, honeysuckle, chocolate mint, shiso, and California poppy

Herbal Infusion of fresh rose, honeysuckle, chocolate mint, shiso, and California poppy


Mountain Rose Herbs
 – Bulk organic herbs, spices, and essential oils. Bottles, presses, strainers and infusers, seeds, extracts, books

Mushroom Harvest 
– Medicinal mushroom powders, extracts, and capsules

Pacific Botanicals
 – Growers and Suppliers of Organic bulk herbs, ships fresh herbs

Frontier Natural Products Co-op – Bulk herbs, spices, bottles, presses, strainers and infusers

This article was originally published in Juliet Blankespoor’s column, the Roots of Herbalism, in the Journal of the National Association of Holistic Aromatherapy.

Meet the Green Mastermind Behind Blog Castanea:

Juliet Blankespoor

JULIET BLANKESPOOR is the founder, primary instructor, and Creative Director of the Chestnut School of Herbal Medicine, an online school serving thousands of students from around the globe. She's a professional plant-human matchmaker and bonafide plant geek, with a degree in botany and over 30 years of experience teaching and writing about herbalism, medicine making, and organic herb cultivation. Juliet’s lifelong captivation with medicinal weeds and herb gardening has birthed many botanical enterprises over the decades, including an herbal nursery and a farm-to-apothecary herbal products business. 

These days, she channels her botanical obsession through her writing and photography in her online programs, on her personal blog Castanea, and in her new book, The Healing Garden: Cultivating and Handcrafting Herbal Remedies. Juliet and her family reside in a home overrun with houseplants and books in Asheville, North Carolina.

Interested in becoming a contributor?


© Chestnut School of Herbal Medicine and, 2011-2024. Unauthorized use and/or duplication of this material without express and written permission from this site’s author and/or owner is strictly prohibited. Excerpts and links may be used, provided that full and clear credit is given to Chestnut School of Herbal Medicine and with appropriate and specific direction to the original content.

This article is an excerpt from our 1,000-hour Herbal Immersion Program, which is the most comprehensive handcrafted online herbal course out there.


47 thoughts on “Herbal Infusions and Decoctions – Preparing Medicinal Teas

  1. I have been drinking nettle infusions for a few weeks now. I do a cold infusion and let it sleep for 24 hours. I would like to add schisandra berries to the infusion, but I wonder if the cold infusion would still be okay to use.

    • Melissa Quercia says:

      You can try adding the schisandra berries directly to the cold infusion, but this method will not extract as much of the beneficial properties. For best results, it is recommended to prepare berries as a decoction. You can decoct the schisandra berries and then add them to your nettle cold infusion!

    • While we can’t give specific health advice to individual readers, it sounds like nervines might be a useful category of herbs to check out. As a place to start, Blog Castanea offers this article: “Tonic Herbs for Stress and Anxiety.” It’s always a good idea to consider diet and lifestyle factors that contribute to good sleep as well. Wishing you sweet slumber!

  2. Lydia Thompson says:

    I was just recommended by a doctor to drink BITTER herbal infusions. He gave examples of artichoke and sillymarin. Any idea where I could find these products and do you have any suggestions of more “bitter” options for a tea infusion?
    Thank you for your help and suggestions.

  3. Hi Juliet,

    Thank you for this article on making herbal tea concoctions. I am curious if there is any importance in brewing temperature, the way there is with coffee (I recently found out that 205 degrees Fahrenheit is the ideal temperature to brew coffee, and after testing, agree with that). Brew temperature may not be a well researched topic as it applies to herbs, but one has to wonder if different herbs may require different temperatures, or if just boiling works in all cases?
    I am specifically interested in finding the ideal temperature to brew ashwagandha at.

    I just ran into this site while typing this: … I will have to experiment with ashwagandha brewing temperature if I don’t find any info.

    • Christine Borosh says:

      This isn’t a commonly researched topic with herbs, but roots like ashwagandha are best prepared as a decoction. So, you’ll follow the guidelines outlined in this article and simmer the ashwagandha covered for 20-30 minutes. There could be more nuances with infusions and that would be interesting to experiment with. I’ve had success with boiling water and pouring that over the herbs to infuse. Some herbs like marshmallow root can even be prepared as a cold infusion using cold or room temperature water.

  4. Hi, I think your website might be having browser compatibility issues.
    When I look at your website in Firefox, it looks fine but
    when opening in Internet Explorer, it has some overlapping.
    I just wanted to give you a quick heads up! Other then that, fantastic blog!

    • Sara Kinney says:

      Teas can play a role in a healthy diet for weight loss, but lifestyle and dietary factors will be more important.

  5. Leona Belzer says:

    I just came back from a visit in Augusta Georgia area.My sister inlaw took me to her neighborhood market stand.I purchased some yellow root sticks can you tell me how i can make these into a tea.

    • Christine Borosh says:

      Just follow the instructions for making a decoction in this article! One thing to note is that yellowroot has a very bitter flavor, so the tea isn’t very palatable.

  6. How should one dose a decoction that will be saved in ice cubes for daily use? Say, if a dose is 3 grams per day of ashwagandha as a tonic, would you multiply the number of ice cube slots by 3 or would that be too strong? I figure it would need to be quite concentrated to get the recommended dose in an ice cube sized space, but I can’t really tell if it would have the intended effect. Thanks!

    • Christine Borosh says:

      When thinking about dosage for infusions and decoctions, the weight of herb used is what determines this, not the amount of water used. So, think about it this way – if you want to consume a 3 gram dose, you could make a decoction with 3 grams of herb in 1/2 cup of water or a decoction with 3 grams of herb in 1 cup of water or a decoction with 3 grams of herb in 3 cups of water. The amount of herbal material is the same in each example, so the resulting decoctions are just different concentrations and the dose changes accordingly.

      To make a decoction that you’ll be preserving in ice cube trays, first weigh out the herb – say, 60 grams to make 20 doses in this case. Then, you’ll divide your resulting decoction into 20 equal servings and freeze. With decoctions, some water will evaporate while it is simmering, so it will end up being less liquid than you started with. You can even choose to reduce the liquid through simmering by half or so to get an even more concentrated decoction so you don’t need to take a large volume each day.

      • You experience is evident by your post, can you help me prepare ESSIAC tea for my mother with Lymphoma. I ordered powdered Turkey Rhubarb and Slippery Elm, Sheep sorrel whole herb and Burdock root, chopped from Mountain Rose Herbs. I don’t feel like the powdered herbs should be boiled along with the root and sheep sorrel. Can you shed some light on this?

        • Sara Kinney says:

          We’re not able to provide personal health advice due to both legal and time restraints, and there are a lot of factors to consider here, including the medications that your mother may be taking and their interaction with herbs. The best course of action would be to see a clinical herbalist who would tailor their dietary and herbal recommendations to your constitution, lifestyle and health. Unfortunately we’re not providing consultations at this time, but there are a number of great herbalists you can reach out to. The American Herbalist Guild maintains a directory of professional herbalists, which you can access here. You can also check the Links page on our website to find graduates of our programs who do clinical work. It might be worth considering acupuncture or naturopathic care. I wish your mom the best on your healing journey!

  7. love the post !!!
    Thank you for your intelligent post and for helping others become more aware. You made more sense than others who speak within this same area of expertise and I am really glad I found your blog-website. I’ve joined your social networks and will keep an eye out for future great posts as well. Additionally, I have shared your site in my social networks as well. Thank you again!

  8. I have been just reading this this blog, & I really impressed by the content. you blog structure is wonderful. I would like to thnks to you for the sharing this useful information with us!!

    Ayurvedic products

  9. Robin Baumholtz-Griffin says:

    I am so happy I finally found somebody/blogger that makes the steps so simple. Some books I have read have actually scared me to the point I am not sure if I should even drink it! I thank you for the short & sweet way to infuse herbs also the websites to find them and supplies. I myself am trying to make nettle tea for my arthritis but can’t find any in my area. i am going to grow my own so maybe with your help I can now….I can’t wait to start getting the newsletters.
    Thank you!!!!

  10. My grandmother showed us always to place an all-metal utensil such as a spoon or knife into any glass container (drinking glass, Mason jar, glass bowl, and so forth) before pouring boiling water into it, precisely to prevent cracking or breaking apart. I do the same for ceramic mugs even though some of them can indeed handle boiling water without having a metal item in place to conduct the heat from the boiling water being poured into the ambient air. Hope this tip is useful to others.

  11. I just started using my own herbs to make daily tea drinks. My first was orange mint with a stevia leaf. It was so good. I also tried a cold tea drink with peppermint. That was so refreshing, and to think it is just one herb! Next I want to try an hibiscus tea.

    Thanks for the encouragement!

  12. Trevor James says:

    How do you make your schisandra tea? I just got a pound of dried berries, I usually take capsules but thought I’d add in some tea to the mix. I love your idea of freezing it into ice cubes! Can’t wait to make some once I figure out the most effective way.

    • Trevor,
      I like to make schisandra infusions – one teaspoon berries added to a cup of boiling water, then strained. Also, please know that we go on frequent camping trips where we are away from the computer for weeks at a time. If there is a delay in adding your comments/questions, that is why. I post all comments as long as they are not a blatant add for a product or unrelated website.
      Thanks for your understanding,

  13. Interesting post and great info about herbal. The topic that your blog deals with demands loads of research. Thanks to you who has provided the intricate information in simple words.

  14. This is a lovely article. My big every so important question is “Who is the potter for your green and gold mug??!!” Its these important things in life that drive me!

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