Small-Batch Strawberry Jam
This is a low-stress way to preserve summer fruit. You want to cook the berries until they turn from a dull red to a glossy, deep crimson that coats the back of a chilled spoon.
The importance of the vessel
Use a wide, shallow pan rather than a deep pot. The increased surface area allows steam to escape faster, significantly reducing the cooking time and preventing the fruit from becoming overcooked or mushy.
- wide heavy-bottomed stainless steel skillet
- small saucer placed in the freezer
- silicone spatula
- canning jars with lids
What goes in.
- 2 lbfresh strawberries, hulled and quartered
- 1 1/2 cupsgranulated sugar
- 2 tbspfresh lemon juice
Judging the set
Since strawberries are low in natural pectin, you must check the consistency manually. When the jam is done, a small dollop placed on your frozen saucer will wrinkle when pushed with your finger.
The method.
Combine the ingredients
Place the strawberries, sugar, and lemon juice into your cold skillet. Toss them together until the sugar begins to draw the juices out of the berries.
Heat the mixture
Set the heat to medium-high. Let the mixture come to a rapid, rolling boil. It will bubble aggressively; keep an eye on it to ensure it does not boil over.
Reduce and skim
Once boiling, lower the heat slightly to maintain a vigorous simmer. Skim off any white foam that gathers on the surface with your spatula.
Monitor the texture
Stir frequently to prevent scorching at the bottom. As the liquid thickens and turns glossy, start performing the cold plate test every few minutes.
Finish and cool
When the jam passes the plate test, remove it from the heat immediately. Ladle it into clean jars and let it cool completely before refrigerating.
Other turns to take.
Vanilla Bean
Add the seeds of one vanilla bean to the mixture at the start for a mellow aromatic depth.
Black Pepper
Fold in a half-teaspoon of freshly cracked black pepper at the final minute of cooking to cut through the sweetness.
When it doesn't go to plan.
Never double the batch in a single pan; the longer cooking time required to evaporate that much liquid will ruin the bright flavor of the berries.
If the jam is too thin after cooling, you can pour it back into the pan and simmer it for a few more minutes.
Keep the lemon juice; the acidity is necessary to help the berries gel and balances the high sugar content.
The ones that keep coming up.
Why is my jam dark brown instead of bright red?
The heat was likely too high for too long, causing the sugar to caramelize and the fruit pigments to break down.
Can I reduce the sugar?
Sugar is a structural component of this jam. Reducing it significantly will result in a syrup rather than a spreadable jam.
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