| Rating | Solver | Clue |
|---|---|---|
| CURDLE | Turn sour | |
| BLINK | To turn slightly sour, as beer, mild, etc. | |
| PRICK | To become sharp or acid; to turn sour, as wine. | |
| LOPPER | To turn sour and coagulate from too long standing, as milk. | |
| FOX | To turn sour; -- said of beer, etc., when it sours in fermenting. | |
| TURN | To make acid or sour; to ferment; to curdle, etc.: as, to turn cider or wine; electricity turns milk quickly. | |
| SOUR | To cause to become sour; to cause to turn from sweet to sour; as, exposure to the air sours many substances. | |