Step 4 of 6 · Small-Batch Strawberry Jam
Wrinkle test: a blob on the frozen plate
Wrinkle test: a blob on the frozen plate — step 4 of 6 in Small-Batch Strawberry Jam. Drop half a teaspoon on the cold plate, wait 20 seconds, push with a finger. If it wrinkles and stays in two parts, it's done.

Free food & cooking tip: Wrinkle test: a blob on the frozen plate (step 4 of 6 from "Small-Batch Strawberry Jam").
Drop half a teaspoon on the cold plate, wait 20 seconds, push with a finger. If it wrinkles and stays in two parts, it's done. If it floods back together, boil 2 more minutes and test again.
Don't do 15 tests. You are cooling the pot. Two or three is plenty.
Pro tip: If it smells like caramel and looks dark, you went past jam into candy. Next batch, test earlier.
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