To Cook Just Below Boiling Point

This page is the CodyCross answer for the clue below from Amusement Park, Group 207, Puzzle 1 (Immersive Attraction).

Question is: To Cook Just Below Boiling Point

and the answer is: SIMMER

Word Meaning:

SIMMER — (intransitive) To cook or undergo heating slowly at or below the boiling point.

Definitions from Wiktionary.