A Step-by-Step Guide to Decoction (Chinese Herbal Medicine Tea)
In Traditional Chinese Medicine (TCM), the most powerful way to consume Chinese herbal medicine is through a decoction—a tea made by boiling raw plant materials. This process extracts the active therapeutic ingredients, allowing for maximum absorption and a formula tailored exactly to your body’s needs.
Choosing Your Cooking Pot
The material of your pot matters. Certain metals can react with the herbs and change their chemical properties.
- Best Options: Ceramic, glass (Pyrex), or high-quality enamel.
- Acceptable: Stainless steel.
- NEVER USE: Aluminium or cast iron.
The Standard Method (Two Cookings)
Most herbal prescriptions follow this method to ensure every drop of medicine is extracted.
Step 1: The Soak
Place one herb packet into the pot. Add approx. 750ml (3 cups) of cold water. Let it soak for 30–60 minutes. This softens the herbs and prepares them to release their active compounds.
Step 2: The First Cooking
- Bring the water to a boil.
- Reduce heat to low and simmer gently for 40–60 minutes.
- The liquid should reduce to about 250ml (1 cup).
- Strain the liquid into a glass jar or container.
Step 3: The Second Cooking
- Add 500ml (2 cups) of fresh water to the same herbs already in the pot.
- Bring to a boil again, then simmer until it reduces to 250ml (1 cup).
- Strain and combine this liquid with the first batch.
Step 4: Dosage & Storage
You now have approx. 500ml of medicine. Divide this into 3 doses.
- Timing: Take one dose in the morning, one at night, and the last the following morning.
- Absorption: Drink warm, at least 30 minutes before or after food.
- Storage: Keep your prepared tea in a glass jar in the refrigerator.
The Longer (Three Cookings)
Use this method only if specifically indicated by your practitioner. This provides three doses per day.
- Follow the Two Cookings steps (Steps 1–4 above). However, instead of combining them, you will drink each decoction immediately after it is prepared.
- The Third Extraction: Add another 2 cups (500ml) of water to the herbs remaining after the second cooking. Simmer until reduced to 1 cup, then drink immediately. This is your third dose for the day.
- Dosing: For each of the three decoctions, ensure you drink them at least 30 minutes before or after meals.
- Repeat: Follow this process for each herb packet that requires a third cooking.
Special Instructions for Small Bags
Sometimes, specific herbs need different cooking times to preserve their potency.
If the bag requires LONGER cooking: Simmer the small bag in 250ml of water for 30–40 minutes before adding the main packet.
If the bag requires SHORTER cooking: Follow the main cooking steps first. Add the small bag only during the last 5 minutes of the simmer.
Special Instructions for the Small Herb Bags (Add-ons)
Some formulas include specific herbs that require different timing. Check your packet for these notes:
“Boil First” (Xian Jian 先煎)
If the small bag of herbs requires longer cooking than the main packet:
1. Simmer the small bag in 250 ml of cold water for 30–40 minutes in an uncovered pot.
2. Soak the main packet separately for 30 minutes in 750 ml of water.
3. Combine both lots, then follow the two- or three-cooking steps above.
“Add at End” (Hou Xia 后下)
If the small bag of herbs requires shorter cooking than the main packet:
1. Follow Steps 1–2 for the main packet first.
2. Add the small bag of herbs and simmer for only 5 minutes, pressing the herbs into the liquid with a spoon.
3. Proceed with the second cooking by following the steps above.
This preserves volatile oils and aromatic properties.
🗓️ Dosage, Storage & Safety
Missed a Dosage?
If you miss a dose, do not double up your next dose to catch up. Simply continue with your next regular dose at the scheduled time. Maintaining a steady, consistent rhythm is more important than taking extra medicine at once.
Storage & Reheating
Fridge: After cooling, store the decoction in a glass jar in the refrigerator. Consume within 2–3 days.
Warmth: Always drink your herbal soup warm. You may reheat it on the stove or in a microwave. TCM principles suggest that warm liquids are more easily absorbed by the “Spleen Qi” (digestive system).
Safety & Compliance
Personalised Formulas: Your prescription is a “bespoke” formula designed specifically for your current state of health. Never share your herbs with friends or family, even if they have similar symptoms.
Side Effects: While rare, some patients may experience mild changes in digestion (such as loose stools) as the body adjusts. If you experience any significant discomfort, skin rashes, or unusual symptoms, stop taking the herbs and call us at (03) 8802 1519.
Pregnancy & Medication: Always inform your practitioner if you become pregnant or if your GP starts you on a new pharmaceutical medication during your herbal course.
☕ Tips for Compliance
The Warmth Factor: TCM principles suggest that cold liquids can “shock” the digestive system (Spleen Qi). Always drink your herbs warm or at room temperature.
Consistency: Think of herbs like a “reset” for your internal environment. Skipping doses makes it harder for your body to maintain the new rhythm we are trying to establish.
FAQ
1. How should I store the liquid?
After cooling, store the decoction in a glass jar in the refrigerator. Consume within 2–3 days to ensure freshness.
2.How long should I soak Chinese herbs before cooking?
Soak herbs in water for at least 30 minutes before boiling. For best results, overnight soaking allows the herbs to release their compounds more effectively.
3. Why do Chinese herbs need two or three cookings?
Decoction often requires two or three cookings to fully extract the active ingredients from the herbs. The first and second cookings are combined for maximum potency. Some formulas require a third cooking for stronger effect.
4. What should I do if my herbal prescription includes a small bag of herbs?
Some small bags require either longer or shorter cooking. If longer, cook separately first. If shorter, add during the last few minutes of cooking. Follow your practitioner’s instructions carefully.
5. Can I use a microwave to reheat my herbs?
Yes, you can gently reheat the liquid in a microwave, though the stove is preferred. Do not let the tea come to a rolling boil again once it has been prepared.
6. When is the best time to drink Chinese herbal decoction?
Take the decoction warm, usually one dose in the morning and one at night. Drink it at least 30 minutes before or after meals to ensure better absorption.
7. What if the taste is too strong?
Chinese herbs are known for their strong, earthy flavor. If you find the taste difficult, you may drink a little warm water immediately afterward, but do not add sugar or honey unless specifically instructed by your practitioner.
Need Guidance?
Preparing Chinese herbal medicine properly is key to receiving their full healing effect. If you’re unsure about the best way to cook your herbs, or if you have questions about dosage and timing, please contact our clinic. Our friendly staff or practitioners will guide you with personalised advice, ensuring you get the best results from your herbal medicine. If you prefer the more convenient way, check our guide on preparing herbal granules here.