stēpan

Stēpan in Old English meant to soak, to immerse in liquid. The word is Germanic, related to Middle Low German stōpen and Old Norse staupa (to pour). The basic meaning has not shifted in over a thousand years: to steep is to submerge something in liquid and wait for the liquid to extract what you want. The patience is the technique. You place the ingredient in water, and time does the work.

Steeping is the foundation of tea, coffee, herbal infusions, and stock-making. When you steep tea leaves in hot water, the heat opens the leaf cells and the water extracts caffeine, tannins, amino acids (especially L-theanine), and volatile compounds that create the aroma. The temperature of the water, the duration of steeping, and the ratio of leaf to water determine the outcome. Japanese green tea is steeped at 60-70°C for 60-90 seconds. English breakfast tea is steeped at 100°C for 3-5 minutes. The word is the same. The precision differs.

In brewing, steeping is the first step: barley is soaked in water to begin germination, producing the enzymes needed for mashing. The brewer steeps the grain to unlock its sugars. The technique is identical to making tea — submersion, extraction, patience — but the goal is alcohol rather than a beverage to drink with milk.

The word steep has a second, apparently unrelated meaning: sharply inclined, as in a steep hill. This second meaning comes from a different Old English word, stēap (high, lofty, projecting). The two words — steep (to soak) and steep (sharply inclined) — are homonyms, not relatives. The tea and the hill share a spelling and nothing else.