Teas and Infusions

Part of Herbal Medicine

Extracting medicinal compounds from plant material using hot water — the most accessible preparation method.

Why This Matters

Hot water extraction (making tea or infusion) is the oldest and most universal form of herbal medicine preparation. It requires no equipment beyond a container, water, and heat. Nearly every traditional medical culture worldwide uses infusions as its primary medicine delivery system.

The method works because hot water extracts a broad spectrum of water-soluble compounds: volatile oils (for aromatic herbs), glycosides, alkaloids, tannins, flavonoids, and bitter principles. For the majority of medicinal herbs, a properly made infusion delivers an effective therapeutic dose.

Knowing how to make infusions correctly — when to use hot versus cold water, how long to steep, how to concentrate or dilute, how to store prepared medicine — is the foundational skill of practical herbalism. Everything else in herbal medicine builds on this.

The Difference Between Infusion, Decoction, and Cold Infusion

These three methods extract different compounds and are used for different plant parts:

Method	Plant Part	Temperature	Time	Best For
Infusion	Leaves, flowers, aromatic herbs	Just-boiled water (90-95C)	5-15 minutes	Volatile oils, delicate compounds
Decoction	Roots, bark, seeds, hard material	Simmering (full boil)	15-30 minutes	Dense material, resins, minerals
Cold infusion	Mucilaginous herbs, delicate material	Cold or room temperature	2-8 hours	Mucilage, enzymes, heat-sensitive compounds

Using the wrong method can render a preparation ineffective. Boiling aromatic herbs (mint, chamomile) drives off the volatile oils that provide the therapeutic effect. Infusing hard bark or roots in hot water without boiling fails to break down the cell walls and extract the active compounds.

Standard Infusion Technique

Equipment

• Clean vessel (cup, pot, or jar)
• Lid or cover (essential — retains volatile oils as steam)
• Strainer
• Fresh or dried herb
• Hot water — just off the boil (90-95 degrees C), not actively boiling

Process

1. Measure the herb. Standard adult dose: 1-2 teaspoons dried herb per cup (240 mL), or 1-2 tablespoons fresh herb per cup.
2. Pre-warm the vessel with a small amount of hot water. Pour it out. A cold vessel drops temperature rapidly.
3. Add herb to warm vessel. Do not add herb to already-poured water — this reduces extraction.
4. Pour hot water over herb — do not let water boil actively when it hits the herb.
5. Cover immediately to prevent volatile oil loss through steam.
6. Steep for 5-15 minutes depending on herb and desired strength (see guide below).
7. Strain through a fine cloth, strainer, or tea infuser.
8. Drink immediately or store in a sealed container for up to 8 hours at room temperature, 24 hours in a cool location.

Steeping Time Guide

Duration	Effect
5 minutes	Mild, suitable for daily maintenance or sensitive patients
10 minutes	Standard therapeutic dose
15-20 minutes	Strong — for acute conditions, higher dose needed
30+ minutes	Very strong — may become unpalatable (excessive bitterness/tannins)

Decoction Technique

For roots, bark, seeds, and any hard or woody plant material.

1. Measure herb: 1 tablespoon dried root/bark per 2 cups water (roots expand during simmering — use proportionally more water).
2. Place herb in pot with cold water. Bring slowly to a simmer.
3. Cover and simmer (not hard boil) for 15-30 minutes. Bark and hard roots may need 30-45 minutes.
4. Strain while hot.
5. Drink the prescribed dose. Store remainder in a sealed container — decoctions keep up to 24 hours at room temperature, 2-3 days in a cool location.

Cold Infusion Technique

For mucilaginous herbs (plantain, marshmallow, slippery elm) where heat destroys the soothing compounds.

1. Add herb to a jar of cold or room-temperature water. Ratio as per standard infusion.
2. Stir, cover, and leave for 2-8 hours (overnight is ideal).
3. Strain. The liquid may be slightly viscous — this is the mucilage, which is the active component.
4. Drink cold or at room temperature. Do not heat.

Preparing Large Batches

Rather than making individual cups, prepare a day’s supply at once.

Daily supply batch: Multiply ingredient by number of cups needed per day. Example: 3 cups per day of yarrow tea = 3 teaspoons dried yarrow in 3 cups just-boiled water. Steep 10 minutes, strain into a jar. Drink through the day.

Storage: Keep prepared tea in a sealed jar at room temperature for up to 8 hours. In cool conditions (cellar, underground cache), prepared tea keeps 24-48 hours. Discard if it smells sour or fermented.

Improving Palatability

Medicinal teas are often bitter, astringent, or otherwise unpleasant. Making them drinkable increases compliance — a medicine not taken does not work.

• Honey: Add to taste after straining. Honey also adds mild antimicrobial properties.
• Lemon or citrus: Brightens taste and increases absorption of some compounds.
• Blending with pleasant-tasting herbs: Mix bitter or unpleasant herbs with a small amount of mint, licorice root, or fennel seed.
• Warming spices: Ginger or cinnamon improves palatability and adds their own therapeutic value.
• Serving temperature: Many bitter herbs taste less unpleasant when very warm. Drink quickly before it cools.

Herbal Tea Blends for Common Conditions

Rather than single herbs, blends often provide broader coverage:

Fever and Flu Blend:

• 2 parts elderflower
• 2 parts yarrow
• 1 part peppermint Induces sweating, antimicrobial, reduces fever. 1 tablespoon per cup, steep 10 minutes, drink hot every 2 hours.

Digestive Calm Blend:

• 2 parts chamomile
• 1 part peppermint
• 1 part fennel seed (lightly crushed) For gas, cramps, nervous digestion. 1 tablespoon per cup, steep 10 minutes.

Sleep and Anxiety Blend:

• 2 parts valerian root (decoct separately for 15 minutes, then add other herbs)
• 2 parts passionflower or lemon balm
• 1 part chamomile Drink 30-60 minutes before sleep.

Respiratory Infection Blend:

• 2 parts thyme
• 1 part mullein leaf
• 1 part elecampane root (add to water before bringing to simmer — this part decocts) For productive cough, chest infection. 1 tablespoon per cup, steep 15 minutes.

Wound Healing Internal Blend:

• 2 parts echinacea (root decocted, or flower infused)
• 1 part calendula
• 1 part thyme Supports immune response and antimicrobial defense while wound heals externally.

The Cup as a Medicine Delivery System

The ritual of drinking tea is itself therapeutic — warmth, hydration, and the act of sitting quietly have measurable calming effects. Do not underestimate the psychological component of herbal medicine. A patient who believes they are receiving care, is warm, and is well hydrated recovers faster than one who is cold and feels neglected. The cup of tea is part of the medicine.