kochen

Etymology
From, from , from.

Verb

 * 1)  to cook, to prepare food (chiefly hot food for lunch or supper)
 * 2)  to cook something (in a) liquid (e.g. soup, chili, spaghetti)
 * 3) to boil
 * 4)  to reach the boiling point
 * 5)  to heat a liquid until it boils
 * 6)  to be stirred up or agitated, especially with anger

Usage notes

 * Intransitive can be used for all sorts of food preparation that require at least some amount of work and effort. However, there is a strong tendency to use the verb only for the preparation of a proper dinner, be it lunch or supper. Hence, the preparation of, say, an onion tart for dinner is, even though the food is baked. Contrarily, the preparation of breakfast is only rarely called  even if eggs are boiled in the process.
 * Transitive can generally be used only for actual boiling. Hence,  would be understood solely as dropping a steak into a pot of boiling water.