Instructions

Put blackberries in a blender or food processor; blend until smooth. Press puree through sieve into a bowl, reserving juice and pulp and discarding seeds. Alternatively, thoroughly mash blackberries in a bowl; press puree through sieve as above.
Add honey to blackberry pulp; mix well. Gently fold in yogurt and crème fraiche until well combined.
Spoon into serving glasses or dishes; chill before serving. Serve with oat biscuits or sponge fingers.
Variations
Use mixed fresh berries such as strawberries, raspberries and blueberries in place of the blackberries. Use same quantity of peeled, stoned ripe mango flesh instead of the blackberries, if desired.