There many ways to prepare tea. You can do it the old school way with a tea kettle and a teapot. You can do it in a more newfangled way (guilty) with water heated in a microwave and a gravity type infuser. Or the even more newfangled method of using a fancy gadget that does much of the work for you.
But when you boil it down, preparing tea is about applying hot water to tea leaves. The details of it are up to the individual, but that’s how it’s done – except when it’s not. I’m no scientist and this is a layperson’s description of the process, but what’s important about preparing tea is to transfer the essence of the tea leaves to the water. Hot water will accelerate the process, but if you have a little more time on your hands cold brewing might work just as well.
Some of the benefits of doing things this way are fairly obvious. If you’re preparing tea in warm weather, it’s a plus not to have to use the stove to heat the teakettle – and the surrounding environment. One of the other main benefits of this method is simplicity. All that’s needed is a container and something to hold or strain the leaves. You can spend money for a fancy “cold infusion set” and whatnot, if that’s what grabs you. But a simple glass container should work just fine. Finally, there are those who claim that tea prepared this way has a better flavor.
As for that question of when steeping is complete, it’s kind of up for grabs. Overnight is a term that gets tossed around a lot when discussing this sort of thing, but it can vary according to the type of tea and whom you’re asking. The consensus seems to be that lighter teas such as green should be steeped for a shorter time, perhaps as little as four hours. One primer I read recommended steeping the Japanese green tea known as Gyokuro in ice and serving it when the ice had fully melted. More robust teas such as black are likely to call for a longer steep times, though I might question the wisdom of the four-day steep recommended in one how-to article.
Like so many other things that have to do with tea, the best course of action when it comes to cold infusing is to experiment and see what works best for you.
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