Steeped Infusions

Every other family in this book is a proportion. This one is a process, and the proportion is the least interesting thing about it. Two grams of leaf in two hundred millilitres of water will make a thin tea, a good tea or an undrinkable one depending on nothing but how hot the water was and how long the leaf stayed in it, and no amount of adjusting the ratio recovers a brew that got either of those wrong.

There are four variables and only one of them is a quantity.

The dose is how much solid goes in, and it is the slot with the widest legitimate range in the book. A mug of builder's tea is about three grams to a quarter of a litre. A gongfu session is five grams to a hundred millilitres (more than four times the strength), and it is not a stronger drink, because the leaf is in contact with the water for seconds rather than minutes. Dose and time trade against each other, which is why a brew ratio quoted without a time means nothing.

The temperature decides what comes out, not just how fast. Extraction is not one process but several running at different rates: aromatics leave first, then the caffeine and the sugars, and last the larger tannins that read as astringency. Water below boiling never reaches the tannins in quantity, which is why a green tea brewed at eighty degrees is sweet and the same leaf at boiling is harsh. Water at a full boil is right for a robust black leaf, which needs the heat to open at all, and wrong for almost everything delicate.

The time is the other half of the same equation and the one that is actually controllable in a domestic kitchen. It is also the only variable in this book that the site deliberately refuses to scale: brewing ten cups does not take ten times as long, because the leaf and the water scale together and the extraction does not care how big the pot is.

The removal is a step, not an afterthought. An infusion left on its leaf is not finished: it is still brewing, more slowly, and by the second cup it is a different drink. This is the structural difference between an infusion and a decoction, and it is why the family's members are described by when the solid comes out rather than by what went in.

A branch of the family never separates the two at all. The chai and karak traditions boil the leaf with milk and spice rather than steeping it, and the milk changes the chemistry as well as the taste: its proteins bind the same tannins that would otherwise read as astringency, which is why a tea strong enough to be unpleasant black is exactly right with milk in it. Those members are boiled rather than steeped, they are timed from the boil, and they take doses that would be absurd in a teapot.

What holds all of this together is not a formula but an order of operations: heat the water to a stated temperature, wet a stated weight of solid, wait a stated time, and separate them. Where a member states a ratio, the ratio belongs to that member and to its own time and temperature. It does not transfer, and this page will not pretend otherwise by averaging them.