Step 3 of 6 · Small-Batch Strawberry Jam
Foam, then a rolling boil
Foam, then a rolling boil — step 3 of 6 in Small-Batch Strawberry Jam. Medium-high. Stir so the bottom doesn't catch. Skim the worst foam if you want a clearer jar — optional.
Free food & cooking tip: Foam, then a rolling boil (step 3 of 6 from "Small-Batch Strawberry Jam").
Medium-high. Stir so the bottom doesn't catch. Skim the worst foam if you want a clearer jar — optional. When it looks like lava and the bubbles are thick and slow, you are close. 8–12 minutes of real boil after it first rolls is a common window for this size.
Thermometer: 105°C / 221°F at sea level. Lower if you live in the mountains (about 1°C less per 300 m). The plate test still wins.
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