Teas & Infusions

Water-based preparations for leaves, flowers, and soft plant material

The most ancient, most accessible, and most underestimated preparation in all of herbalism

Before there were tinctures or capsules or standardized extracts, there was hot water and a plant. This is where herbal medicine begins — where it has always begun — and for most of human history it is where it largely stayed. The infusion is the oldest form of herbal medicine in the world, and it remains one of the most effective.

Most beginners underestimate the tea. It seems too simple, too ordinary, too much like something you’d make without thinking before bed. Surely the real medicine must be in the tinctures, the capsules, the more complicated preparations?

It isn’t. A well-made herbal infusion — the right herb, the right amount, prepared correctly and taken consistently — is one of the most potent preparations in an herbalist’s toolkit. Water is a remarkable solvent. It extracts vitamins, minerals, polysaccharides, flavonoids, tannins, bitter compounds, mucilage, and many volatile aromatic oils. For the herbs that water serves well, no other preparation is necessary, and no other preparation is superior.

This article covers everything you need to know to make excellent herbal infusions — the different types and when to use each one, how to prepare them correctly, which herbs are best suited to water-based preparations, and the practical details that make the difference between a tea that works and one that doesn’t.

What Is an Infusion?

An infusion is made by pouring hot water over plant material and allowing it to steep — the same basic process as making a cup of tea, which is itself an infusion of the Camellia sinensis plant. The hot water acts as a solvent, drawing out the water-soluble constituents of the plant: volatile aromatic compounds, flavonoids, tannins, bitters, mucilage, polysaccharides, vitamins, and minerals.

The word “infusion” is used specifically for soft plant material — leaves, flowers, aerial parts, and finely cut soft material. It is distinguished from a decoction, which uses simmering rather than steeping and is the method for harder plant materials like roots, bark, seeds, and woody stems. If you’re unsure whether to make an infusion or a decoction, the general rule is: if it’s soft and delicate, infuse it. If it’s hard and dense, decoct it. The decoctions article covers the latter in detail.

The Four Types of Infusion

Not all infusions are made the same way, and choosing the right type for the herb and purpose makes a meaningful difference in what you extract and how effective the preparation is.

The Standard Infusion

This is what most people mean when they say herbal tea: hot water poured over dried herb and steeped for five to fifteen minutes. It is the most common herbal preparation in the world and the one you will use most often.

How to make a standard infusion
Use 1 to 2 teaspoons of dried herb per cup of water (roughly 8 oz). Fresh herbs generally need two to three times as much by volume.

Bring water to just off the boil — around 200–205°F (93–96°C). Fully boiling water is slightly too hot for delicate aromatic herbs and can drive off volatile oils.

Pour the hot water over the herb. Cover immediately and steep for 5 to 15 minutes. The cover is important: it traps volatile aromatic compounds that would otherwise escape as steam.

Strain through a fine mesh strainer or tea infuser. Press the herb material gently to extract the last of the liquid.

Drink while still warm, or allow to cool. A standard infusion is generally best used within 24 hours.

The steeping time matters more than most beginners realize. A five-minute steep produces a pleasant, mild tea. A fifteen-minute steep of the same herb produces something significantly more concentrated and medicinally potent — and often more bitter. For everyday enjoyment and mild support, shorter steeps are fine. For therapeutic use, longer steeping extracts more of what you’re after.

The cover is not optional:
Always cover your infusion while it steeps. The steam that rises from hot water carries volatile aromatic compounds with it — the same compounds responsible for much of the calming action of chamomile, the carminative effect of peppermint, and the nervine action of lemon balm.

An uncovered cup of peppermint tea loses a meaningful portion of its medicinal value in the steam. A covered cup retains it. This single habit makes a real difference in the effectiveness of aromatic herb teas.

The Nourishing Herbal Infusion

The nourishing herbal infusion is a different beast from a standard cup of tea — longer, stronger, and nutritionally more substantial. It was popularized in contemporary herbalism largely by herbalist Susun Weed, and it remains one of the most valuable and underused preparations for everyday wellness.

The concept is simple: steep a large amount of herb in a large amount of water for a long time — typically four to eight hours or overnight. This extended steeping time extracts minerals, vitamins, and other nutritional constituents far more completely than a short steep can, producing something that functions more like a nutritional food than a beverage.

How to make a nourishing herbal infusion
Use 1 ounce (about 28 grams, or roughly 1 cup loosely packed) of dried herb per quart (4 cups) of water.

Place the herb in a quart mason jar. Pour boiling water over the herb, filling the jar. Stir briefly to make sure all the herb is wetted.

Lid the jar tightly and allow to steep for 4 to 8 hours — or overnight. Room temperature is fine for most herbs; refrigerate if your kitchen is warm or if you’re steeping for longer than 8 hours.

Strain out the herb, pressing well. Drink throughout the day — cold, at room temperature, or gently warmed.

Nourishing infusions are best used within 24 to 36 hours. Store in the refrigerator.

The nourishing infusion is not appropriate for all herbs — it is specifically suited to nourishing, mineral-rich, nutrient-dense herbs that are safe to consume in larger quantities over time. The herbs most associated with this preparation are nettle leaf, oat straw, red clover, comfrey leaf, and linden (also called lime blossom). These are not the aromatic or strongly medicinal herbs — they are the deeply nourishing tonics.

What a nourishing infusion actually delivers: A quart of nettle nourishing infusion contains significant and bioavailable amounts of calcium, magnesium, iron, potassium, vitamins A, C, and K, and protein. This is not herbal mythology — the mineral content of a long-steeped nourishing infusion has been measured and is genuinely substantial. For people who struggle to get adequate minerals through food alone, regular nourishing infusions of nettle or oat straw are one of the simplest and most cost-effective nutritional interventions available.

The Cold Infusion

The cold infusion is the method of choice for mucilaginous herbs — herbs that contain large amounts of mucilage, the thick, slippery polysaccharide gel that soothes and coats irritated mucous membranes.

Hot water actually breaks down mucilage over time, reducing its soothing effectiveness. Cold water extracts it beautifully. A cold infusion of marshmallow root produces a silky, thick, profoundly soothing liquid that coats a sore throat or an irritated gut with immediate and noticeable effect. The same herb made as a hot tea produces something far less mucilaginous.

How to make a cold infusion
Use 1 to 2 teaspoons of dried herb per cup of room temperature or cold water. For highly mucilaginous herbs like marshmallow root, you can use more — up to a tablespoon per cup — for a thicker preparation.

Place the herb in a jar or pitcher. Add cold or room-temperature water. Stir briefly.

Cover and allow to infuse for 4 to 8 hours at room temperature, or overnight in the refrigerator.

Strain through a fine mesh strainer. The liquid will be slightly viscous and silky — that’s the mucilage. Drink as needed.

Use within 24 hours. The high mucilage content makes these preparations more susceptible to microbial growth than hot infusions, so freshness matters.

The best herbs for cold infusion are marshmallow root (the gold standard for mucilaginous cold infusion), marshmallow leaf, linden flower and leaf, slippery elm bark, comfrey leaf, and plantain leaf. These can also be made as warm infusions — but for maximum mucilage extraction, cold is better.

The Sun Infusion

The sun infusion is the most folk and least clinical of the four types, and it is worth knowing because it connects you to an older way of working with plants. It is made by placing herbs in water in a clear glass jar and setting it in direct sunlight for two to four hours, allowing the sun’s gentle warmth to draw out the plant’s qualities slowly.

The sun infusion does not produce a preparation as concentrated or therapeutically potent as a hot infusion — the temperature is too low to extract deeply. But for gentle aromatic herbs — lemon balm, chamomile, rose petals, lavender — it produces a delicately flavored, softly medicinal beverage that is genuinely lovely and offers a different quality of engagement with the plants. Many herbalists make sun infusions for pleasure and ritual as much as for medicine.

How to make a sun infusion
Place 1 to 2 ounces of fresh or dried herb in a clear quart mason jar.

Fill with cold or room temperature water. Cap the jar.

Set in a sunny spot outdoors or on a sunny windowsill for 2 to 4 hours.

Strain and drink the same day. Sun infusions are at their best fresh and should not be stored.

Quick Reference: Choosing Your Infusion Type

Preparation type	Herb amount	Water temp	Steep time	Best for
Standard infusion (tea)	1–2 tsp dried herb per cup	Just off boil (200–205°F)	5–15 minutes, covered	Most leaves, flowers, and soft material for everyday use
Nourishing infusion	1 oz dried herb per quart	Boiling	4–8 hours or overnight	Mineral-rich nourishing herbs: nettle, oat straw, red clover, comfrey leaf
Cold infusion	1–2 tsp per cup	Room temp or cold	4–8 hours	Mucilaginous herbs: marshmallow root, linden, slippery elm
Sun infusion	1–2 oz herb per quart	Ambient (sun-warmed)	2–4 hours in sun	Gentle aromatic herbs; traditional folk preparation; lovely for enjoyment

Which Herbs Are Best Suited to Infusion

Water-based infusions are the right preparation for herbs with the following characteristics:

Aromatic and volatile. Herbs whose primary constituents are volatile aromatic oils that evaporate easily — chamomile, peppermint, lemon balm, lavender, tulsi, catnip, fennel seed, thyme. These herbs work beautifully as infusions precisely because hot water releases their aromatic compounds. They do not need alcohol to extract their active constituents.
Rich in water-soluble nutrients. Nourishing herbs like nettle, oat straw, red clover, and horsetail deliver their nutritional value — minerals, vitamins, proteins — via hot water. Alcohol is unnecessary and in some cases less effective for extracting these constituents.
Mucilaginous. Herbs high in mucilage — marshmallow, slippery elm, comfrey leaf, plantain — extract their primary therapeutic constituents in water, especially cold water.
Mildly bitter or tannin-rich. Many gently bitter digestive herbs and astringent tannin-containing herbs make effective teas — lemon balm, raspberry leaf, rose petals, chamomile, yarrow.

Herbs that are less well-suited to infusion include those with primary constituents that do not extract well into water: resins (which need alcohol), many alkaloids (which may need acid or alcohol), and fat-soluble compounds. These herbs are better served by tinctures, vinegar extracts, or other preparations — which will be covered in the relevant articles in this series.

Practical Details That Make a Difference

Water quality

Water quality affects infusion quality more than most people expect. Heavily chlorinated water can affect both taste and the extraction of some constituents. Filtered or spring water produces noticeably better-tasting infusions. If your tap water tastes good, it is probably fine. If it has a strong chlorine or mineral flavor, filtering it will improve your teas.

Herb amount

The amounts given in this article — one to two teaspoons per cup for standard infusions — are starting points, not fixed rules. Lighter, more aromatic herbs like chamomile and lemon balm can be used generously without bitterness. Strongly bitter herbs like dandelion leaf or yarrow become quite challenging at high amounts. Start with the recommended amounts and adjust based on your taste and the effect you’re looking for.

For therapeutic use, erring toward the higher end of the range — two teaspoons rather than one, a longer steep — generally produces a more medicinally effective preparation. For enjoyment and everyday maintenance, lighter preparations are perfectly appropriate.

Fresh vs dried herb

Fresh herbs require significantly more volume than dried, because fresh plant material is heavy with water. As a general guide, use two to three times as much fresh herb by volume as you would use dried. A teaspoon of dried chamomile flowers becomes two to three teaspoons of fresh chamomile flowers for an equivalent preparation.

Fresh herbs that are particularly lovely as infusions include lemon balm, peppermint, tulsi, chamomile, lavender, and rose petals. The fresh preparations often have a brighter, more vibrant quality than dried herb teas — a different experience worth exploring when you have access to fresh material.

Blending herbs

Most of the herbal teas you will make will be blends — two, three, or four herbs combined in a single infusion. Blending allows you to address multiple aspects of a situation at once, balance flavors, and create preparations that are both effective and enjoyable to drink.

A simple approach to blending: choose one primary herb that addresses the main goal, one or two supporting herbs that complement it, and if needed a flavoring herb that makes the blend more palatable. For example: chamomile (primary: calming digestive nervine) + fennel seed (supporting: carminative for bloating) + a small amount of licorice root (flavoring: natural sweetness).

The formulation article covers blending in more depth. For now, simply know that blending is natural and encouraged, and that most traditional herbal preparations have always been combinations rather than single herbs.

Storage and shelf life

A made infusion is a perishable preparation. Standard infusions are best consumed the same day, though they will keep in the refrigerator for 24 hours with reasonable quality. Nourishing infusions keep for 24 to 36 hours refrigerated. Cold infusions, because of their high mucilage content, are most vulnerable to spoilage and should be used within 24 hours.

There is no meaningful way to preserve a made infusion for longer storage. Make fresh as needed. The preparation time is only minutes, and freshness is genuinely worth it.

Infusion as Daily Practice

There is a reason that nearly every herbal tradition in the world centers on some form of tea or infusion. It is not just because the preparation is effective — though it is. It is because the practice of making and drinking an herbal infusion creates a daily moment of intention.

Choosing your herbs with care. Boiling the water. Pouring it over the plant material. Covering the cup. Waiting. Straining. Sitting down with the finished tea and drinking it slowly, paying attention to the taste and warmth and smell of it. This is not just medicine delivery. It is a practice of attention, of deliberateness, of daily connection with the plant world.

The most consistent herbal practitioners — the ones who actually see results from their herbs over time — are almost always the ones who have built a daily tea practice. Not because tea is always the most potent preparation, but because it is the most sustainable one. A tincture taken inconsistently will not outperform a tea taken faithfully every morning.

Your infusion practice is the heartbeat of your herbal work. Build it first, before anything else. Let it become so natural and habitual that it is simply part of how you move through your days.

The cup of tea is not the beginner’s preparation.
It is the foundation of all herbal practice.
Water is the oldest and most democratic of solvents.
Hot water and a plant: this is where it begins,
and for many herbs, it is all you will ever need.

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The information provided on this website is for educational purposes only and is not intended to diagnose, treat, cure, or prevent any disease.

Herbal remedies can affect individuals differently and may interact with medications or medical conditions. Always consult a qualified healthcare professional before beginning any new herbal regimen, especially if you are pregnant, nursing, taking medications, or have a medical condition.

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