SIMMER

Cook just below boiling point (6)

Solution has appeared in 2 crosswords (1 across and 1 down):

• Quick crossword No 16,078 — 2021-11-17 00:00:21
  8A: Cook gently in liquid below boiling point (6)
• Quick crossword No 15,352 — 2019-07-21 23:00:07
  8D: Cook just below boiling point (6)