Before you hand them round, pour over more of the reserved blackberry cassis juices and scatter the demerara sugar over each serving. Harriet says: “This secretly healthy tart is packed with ...

You should have about 2 cups puree. Stir in the cassis and lemon juice to taste. Chill thoroughly, then churn in an ice cream maker. Freeze until hardened, about 1 hour. Recipe and photo from ...