Remove bowl from over water.Using electric mixer, beat mixture until cooland thick, about 3 minutes.
Whip remaining 1/2 cup cream and mapleextract in large bowl to soft peaks. Foldwhipped cream into yolk mixture. Cover andfreeze maple cream until firm, at least6 hours or overnight.
Whisk jam in medium bowl to loosen.
Add berries; toss to coat and let stand15 minutes. Spoon berry mixture into dishes;top with maple cream.