How to Cook Raw Chinese Herbs at Home (Step-by-Step Decoction Guide)

So your practitioner sent you home with a brown paper bag of twigs, bark, roots, and what looks suspiciously like a dried mushroom. You’re now wondering what on earth to do with it.

This is your guide to cooking raw Chinese herbs (called a decoction) at home, simply, safely, and without setting off the smoke alarm.

If you’re taking pills or granules instead, see Tips for Taking Chinese Herbs for that version.

What is a Chinese Herbal Decoction?

A decoction is just a strong tea made from raw plant parts. You soak, simmer, strain, and drink. The water pulls the active compounds out of the herbs and leaves you with a concentrated brew tailored to your body.

Raw herbs are the original form of Chinese herbal medicine. Stronger than pills, more flexible than granules, and (after the first sip) actually quite manageable.

What You’ll Need

• A pot. Glass, ceramic, clay, or stainless steel. Avoid aluminium, copper, cast iron, or anything with a non-stick coating, the metals can react with the herbs.
• Filtered water. Tap water is fine if your area has decent water, but filtered is better.
• A strainer or cheesecloth. Something fine enough to catch small bits.
• A jug or two glass jars. For storing the finished decoction.
• Your bag of herbs. Usually pre-divided into single-day portions.

A dedicated clay herb cooker is traditional and excellent if you take herbs often, but absolutely not required. A regular saucepan is fine.

How Long One Packet Lasts (Read This First)

Most online guides assume one packet equals one day. In my clinic, that’s only true for acute conditions, things like fever, sharp pain, or a flare-up that needs full-strength dosing. For most ongoing treatments, the dosing is gentler and a single packet covers two days.

Here’s the breakdown:

• Chronic conditions (default): 1 packet = 2 days. Cook once, drink across 4 doses.
• Busy adaptation: 2 packets cooked back to back = 4 days. Same idea, less cooking.
• Acute conditions: 1 packet = 1 day. Stronger, more frequent dosing. Your practitioner will tell you if this applies.

Always follow what your practitioner has prescribed. If you’re not sure which version applies to you, ask before you start.

Step-by-Step: How to Cook Raw Herbs

This is the standard method. It works the same whether you’re on the chronic or acute schedule, the only difference is how you split the finished decoction.

1. Open one packet

Each packet is one cooking session. Don’t combine packets in the same pot, even if you’re cooking two days at once.

2. Soak the herbs

Tip the packet into your pot. Add 3.5 cups (about 875ml) of cool water, enough to cover the herbs by 2 to 3cm. If the herbs are bulky and need more water to cover, add a bit more, that’s fine. Let them soak for 20 to 30 minutes. This softens the plant material and helps the active compounds release properly. Skipping the soak gives you a weaker brew.

3. First simmer

Bring to a boil with the lid on, then drop to a low simmer for 30 to 40 minutes. Lid stays on, but slightly cracked so steam can escape. Check occasionally that there’s still water in the pot.

⏰ Set a timer. Always. The simmer is gentle and quiet, easy to forget. Come back to a dry pot and you’ve burnt a week’s worth of herbs into the bottom of your saucepan. The smoke alarm will let you know.

4. Strain off the first batch

Pour the liquid through your strainer into a jug. Keep the herbs in the pot.

5. Second simmer

Add 2.5 cups (about 625ml) of fresh water to the same herbs. Simmer again for 20 to 30 minutes. Strain into the same jug.

6. Combine and measure

Mix both batches together. You should end up with about 2 cups (500ml) of finished decoction, give or take depending on how much water you started with. Don’t worry about the exact volume, just measure the total and divide it.

How to Split Your Decoction

Take whatever total volume you ended up with and divide it by the number of doses needed:

Chronic conditions (default): 1 packet = 2 days

• Divide your total volume by 4.
• Drink one quarter in the morning and one quarter in the evening, for two days.
• If you finished with 2 cups, that’s about ½ cup per dose.

Acute conditions: 1 packet = 1 day

• Divide your total volume by 2.
• Drink half in the morning and half in the evening, on the same day.
• If you finished with 2 cups, that’s 1 cup per dose.

Stick with whatever your practitioner prescribed. The dosing reflects the strength your body needs.

When to Take Your Decoction

• 30 minutes before food, or 1 hour after, for best absorption.
• Drink it warm, not hot, not cold.
• Morning and evening, ideally about 12 hours apart.
• If your practitioner gave different instructions, follow theirs.

How to Drink It (Without Pulling a Face)

The taste is part of the medicine. Bitter, earthy, occasionally swampy. Some formulas are easier than others.

Things that help:

• Drink it like a small cup of tea, not a shot. Sipping gives your tongue less to react to.
• Hold your nose for the first few sips if needed.
• Chase with a small piece of date or candied ginger. Don’t add sugar or honey unless approved, some formulas are less effective with sweeteners.
• Brush your teeth after if the taste lingers.

You’ll get used to it within a few days. Most people end up tolerating it fine.

Special Instructions Your Practitioner Might Add

Some herbs need different handling. If your practitioner mentions any of these, follow their lead:

• Decoct first: Certain herbs (like mineral or shell-based herbs) need 20 to 30 minutes of cooking *before* the rest go in.
• Add later: Aromatic herbs (like mint or perilla) lose their potency if cooked too long. Add them in the last 5 to 10 minutes only.
• Wrap in cloth: Some herbs are floaty or fluffy and get wrapped in muslin so they don’t end up in your cup.
• Dissolve separately: Things like gelatin (e jiao) get warmed and stirred in at the end.

If your packet has separate small bags inside the main bag, those are usually the special-handling herbs. Ask if you’re not sure.

How to Store Your Decoction

• Same day: Keep at room temperature in a covered jar. Drink within 12 hours.
• 1 to 4 days: Refrigerate in glass jars. Warm gently before drinking. Use within 4 days of cooking.
• Don’t microwave if you can avoid it. Warm on the stove, in a hot water bath, or in a thermos. Microwave is fine in a pinch.
• Don’t reuse the cooked herbs after the second simmer. Compost them.

What to Expect

• The smell will fill your kitchen. Open a window. It fades within an hour.
• Your urine might smell or look different. That’s normal.
• Some people feel changes within days, others take weeks. Both are normal.
• If you notice anything unexpected (rash, digestive upset, wired feeling), pause and message your practitioner.

Common Mistakes to Avoid

• Using a metal pot that reacts. Stick to glass, ceramic, clay, or stainless steel.
• Skipping the soak. Big difference in potency.
• Boiling too hard. A gentle simmer extracts the medicine. A rolling boil destroys it.
• Lifting the lid constantly. Lets the volatile compounds escape.
• Drinking it cold. Cold decoctions are harder on digestion and less effective.
• Combining packets to save time. Each packet is a day’s dose. Doubling up doesn’t double the benefit, it just wastes herbs.

Cooking Two Packets at Once: 4 Days of Herbs in One Session

For single parents and busy professionals, this is the version that actually fits real life. Cook two packets back to back, divide the volume across four days, get on with your week.

How to do it

1. Cook two packets back to back on the same evening. Use the standard method (soak, simmer, strain, second simmer, combine) for each packet separately. Don’t combine the herbs in one pot, each packet needs its own cooking water and timing.
2. Combine both finished batches into one jug. You should end up with around 4 cups (1 litre) total.
3. Divide the total by 8 to get your dose. That’s about ½ cup per dose, taken morning and evening for 4 days.
4. Pre-portion into 8 small glass jars or one labelled jug with marked dose lines. Refrigerate.
5. Each day: warm a portion gently, drink within 5 to 10 minutes.

Tips that make this actually work

• Cook on Sundays. One cooking session per week covers Monday through Thursday. Repeat midweek for Friday through Monday, or skip ahead with granules on weekends.
• Cook while you do something else, but SET A TIMER. The simmer is unattended, fold laundry, help with homework, eat dinner. But seriously, set a timer. Forget about it for an hour and you’ll come back to a smoky kitchen, a dry pot, and a small pile of very expensive charcoal. Phone alarm labelled “HERBS” is your friend.
• Use small mason jars (200 to 250ml). Pre-portioned doses you can grab from the fridge.
• Warm in a thermos for work. Pour the morning dose into a small thermos before you leave. It stays warm for hours.

What you lose by doing this

About 10 to 20% of the medicinal strength compared to drinking it the same day, mostly from volatile aromatic compounds. For most chronic conditions this is a fair trade for the consistency. For acute presentations (fever, infection, sharp pain), fresh wins, cook daily if you can.

What not to do

• Don’t stretch the schedule beyond 4 days. Past that, the decoction loses potency and can spoil.
• Don’t freeze unless your practitioner specifically says it’s okay for your formula.
• Don’t combine the raw herbs from both packets into one giant pot. Each packet cooks separately, then you combine the liquid.
• Don’t store in plastic. Glass jars only.

If you’re considering this, mention it to your practitioner. They might suggest granules instead, which are designed for exactly this kind of busy life and skip the cooking entirely.

Why Bother With Raw Herbs Instead of Pills?

Raw herbs are the most powerful form of Chinese medicine. They’re tailored to your exact pattern, can be adjusted week by week, and the act of preparing them is part of the medicine. You connect with the process.

That said, they’re a commitment. If your schedule doesn’t allow daily cooking, ask your practitioner about granules or pills as alternatives.

Want Help With Your Formula?

If you’ve been prescribed raw herbs and you’re not sure how to handle yours specifically, or you want to check whether your formula is still the right fit, book a follow-up or message me. The first cook is always the hardest. After that, it’s just part of your routine.

If you want a deeper understanding of how Chinese medicine works (and how to get the most out of treatment), I’m writing a book called Before the Needles. Sign up for early access and get a free chapter when it’s ready.

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Frequently Asked Questions

How long does it take to cook raw Chinese herbs?

Soak for 20 to 30 minutes, then simmer for 30 to 40 minutes for the first batch and 20 to 30 minutes for the second. Total active time is around 90 minutes, but most of that is unattended.

Can I use a slow cooker or Instant Pot?

Yes for an Instant Pot (use the slow cook or sauté/simmer function, not pressure). Slow cookers can work but don’t get hot enough on low, use the high setting and check the temperature reaches a true simmer. A regular pot on the stove is still the most reliable.

How long do raw herbs last?

Dry, sealed, in a cool dark place: usually 2 to 3 months. Once cooked, drink within 48 hours and keep refrigerated.

Can I use a microwave to reheat my herbs?

Yes, a quick gentle reheat in the microwave is fine, the stove or a hot water bath is preferred but the microwave won’t ruin your formula. Just don’t let it come to a rolling boil again once it’s been prepared, you’re warming it, not re-cooking it.

Can I cook all my packets at once and freeze them?

Freezing isn’t recommended, the medicine works best fresh or refrigerated. But cooking 2 packets at once for 4 days of doses is a solid adaptation if you can’t cook midweek. See the section above for the method.

Do I have to drink it all in one go?

No. Sip it like tea over 5 to 10 minutes. Splitting into smaller portions across the morning is also fine if your stomach is sensitive.

What if I miss a dose?

Take the next dose at the normal time. Don’t double up. Consistency matters more than perfection.

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