Flash Steep
A flash steep is an infusion poured off almost immediately, typically 1-5 seconds, used to control very potent leaf in gongfu brewing.
Definition
A flash steep, sometimes called flash brewing, is an infusion where water goes onto the leaf and is poured off within a few seconds, often as soon as the lid is in place. It is used when the leaf-to-water ratio is high and the tea extracts quickly, which in practice means gongfu sessions with shou pu'er, young sheng pu'er, heavily broken leaf, or strong Dancong oolong. Short contact limits how much bitter and astringent material reaches the cup. Fast-dissolving aroma compounds and sugars come out in the first seconds, while catechins and caffeine continue to diffuse for longer. A flash steep of very concentrated leaf can therefore taste full and sweet where a 30-second steep of the same leaf would be harsh. Flash steeps are normally used for the early infusions of a session, when the leaf is most potent; times are lengthened as the leaf tires. The term is also used loosely for any very quick first infusion. It should not be confused with flash-chilling, where tea brewed hot is poured directly over ice.
In Depth
When to flash steep: if a 10-second first infusion is too strong, either reduce the leaf or flash the next few infusions at 1-5 seconds. Leaf-heavy pu'er sessions at 1 g per 10-15 ml often run 4-6 flash steeps before times climb above 10 seconds.
The pour itself takes time. A gaiwan or pot that drains slowly can add 5-10 seconds of contact, so a "1-second" steep is really closer to the pour time. Vessels with a clean, fast pour make flash steeping practical; teapots with clogged filters or a narrow spout make it hard.
Shou pu'er and broken leaf from the edges of a cake extract fastest. Whole-leaf, lightly oxidized teas rarely need flash steeps unless very heavily dosed.
See Also
- Gongfu Timing
- Pu'er Brewing
- Infusion Control