Blackberry Foam Trifle
... Blackberry Foam Trifle 1 sponge round 3 tablespoonfuls blackberry jam 1 Ib. marshmaliows # Ib. ripe blackberries 2 oz. sugar 1 large tin Carnation Milk (the remainder may be used in coffee later!) 1 teaspoonful lemon juice 1 teacupful double cream Split ...