Blackberry Jam with 3 Ingredients

Instructions:

1. Place the rinsed blackberries in a heavy-bottomed stainless steel pot.
2. Using a potato masher, crush the berries until they are broken down but still contain some small, chunky fragments.
3. Stir in the lemon juice.
4. Pour the sugar over the mashed berries, stirring gently until the sugar is mostly dissolved.
5. Turn the heat to medium-high and bring the mixture to a full, rolling boil.
6. Stir constantly for 10–15 minutes until the color shifts to a deep, mahogany-colored purple and the consistency becomes syrupy.
7. Perform the plate test: Drop a small spoonful of jam onto a frozen plate, let sit for 30 seconds, and push the edge with a finger; it is done when the jam wrinkles.
8. Remove from heat immediately and ladle the hot jam into sterilized jars, leaving 1/4 inch of headspace.