2 envelopes unflavored gelatine
1 cup cold water
4 1/2 cups strawberries, sliced (or blueberries)
1/2 cup granulated sugar
1/4 cup lemon juice
2 to 3 tablespoons raspberry or orange liqueur (optional)

In large saucepan, sprinkle unflavored gelatine over cold water; let stand 1 minute.

Stir over low heat until gelatine is completely dissolved, about 5 minutes.

Add strawberries, sugar and lemon juice. Bring to a boil, then simmer, stirring occasionally and crushing berries slightly, 10 minutes.

Stir in liqueur. Spoon into jars; cool slightly before refrigerating. Chill until set, about 3 hours.

Store up to 4 weeks in refrigerator or up to 1 year in freezer.

Makes 4 cups jam.