- 10 ounces blueberries (2 cups)
- 12 ounces blackberries (2 1/2 cups)
- 1 cup sugar
- 1/2 cup water
- 1 (3-inch) cinnamon stick
- 1 whole clove
- 1 green cardamom pod (optional)
- Bring berries, sugar, water, spices, and a pinch of salt to a boil in a heavy medium saucepan, stirring until sugar is dissolved. Reduce heat and simmer, uncovered, stirring occasionally, until fruit is very soft, about 30 minutes. Strain thourough a fine-mesh sieve into a bowl, pressing gently on and then discarding solids. Cool, then chill, covered.