Infusion vs. Decoction: What's the Difference, and When Should You Use One or the Other?

On paper, the difference is just one line. In the cup, it’s like night and day. Pour hot water over pieces of ginger and you’ll get a faintly fragrant drink; simmer them for ten minutes in a pot and you’ll have a full-bodied, spicy cup that warms your hands—and everything else. Same plant, two completely different results. The key is knowing which method to use for which plant—and it’s simpler than it seems.

The rule that solves everything: look at the part of the plant

Forget about long lists. There’s only one factor that determines the brewing method: the hardness of the water you’re using.

The tender parts — flowers, leaves, and herb tops — release their aromas easily. A little hot water, a few minutes of patience, a lid, and you’re done. Chamomile, mint, verbena, linden: all these plants are best enjoyed as an infusion, and the harshness of boiling would damage them more than anything else. Boiling flowers is the surest way to end up with a bitter cup that has lost all its delicacy.

The hard parts — roots, bark, rhizomes, and tough seeds — are structured differently. Their dense, woody tissues don’t let water penetrate easily: simply pouring hot water over them isn’t enough. Ginger, cinnamon sticks, licorice, and thick citrus peels: for these ingredients, you need to use a saucepan. That’s exactly what a decoction is for.

Making a Decoction, Step by Step

The detail that always surprises me: a decoction starts with water cold. This isn’t just some herbalist’s whim. As the water heats up, it seeps into the plant’s tough tissues and prepares the ground—some people even go so far as to let the roots soak for an hour or two before heating them, and you can really taste the difference. Starting with boiling water sears the surface while leaving the center uncooked.

Here’s how to do it: Cut your roots or bark into small pieces (the more surface area exposed to the water, the better), cover them with cold water in a pot, bring to a boil, then reduce the heat. Let it simmer, covered—ten minutes for thin pieces, up to thirty for the tougher ones—then turn off the heat and let it sit for a while longer, still covered. Strain it, then taste it. You’ll know right away why you went to all this trouble.

A quick note about water: just like with herbal tea, soft water with low mineral content brings out the flavors best. And the lid isn’t just for show—without it, some of the aromas will quietly escape with the steam while the water is simmering.

And what if the mixture contains both?

This is the most common scenario, and honestly the easiest to decide. Commercial blends—the ones you’ll buy from us or elsewhere—often combine flowers, fruits, and spices in a blend designed for steeping: the harder pieces are cut fine enough to release their flavors without needing to be simmered. In this case, there’s no need to go overboard: just brew a generous cup, covered, following the steeping times outlined in our guide to Steeping time by herb, will yield exactly the cup size intended by the company that created the blend.

Save the decoction for your homemade preparations using raw ingredients: fresh ginger from the market, cinnamon sticks, and roots bought at a herbal shop. That’s where it’s irreplaceable.

The Complete Guide—So You'll Never Hesitate Again

There is actually a third, lesser-known gesture: the maceration, where the plants are steeped for several hours in cold or room-temperature water, without any heat. This is the technique used for summer iced infusions—slow, gentle, and surprisingly aromatic. Keep the general principle in mind: the more tender the plant material, the less heat and time it needs; the tougher it is, the more of both it requires. Flowers: a short infusion. Leaves: a slightly longer infusion. Roots and bark: a decoction. Craving something refreshing: maceration. With that, you’ve got the basics down—the rest is up to your palate to fine-tune.

FAQ — Infusions and Decoctions