Fluffy Strawberry Frosting 1 Reviews By ColeAlayne recipe Comments | 1 Favorites | 195 Print This recipe has been in my husband’s family for years. Their traditional birthday cake is an angel food cake covered in this frosting. Fluffy Strawberry Frosting Ingredients 1 10oz. pkg frozen strawberries with juice1 tbsp lemon juice1/2 c sugardash salt1 pkg Knox gelatin1/4 c water1 c whipping cream Instructions Drain the strawberries reserving the juice. Bring the strawberry and lemon juices, sugar and salt to a boil. Dissolve the Knox gelatin in the 1/4 c water. Add the gelatin to the juice mixture. Remove from heat and allow to cool. Meanwhile, prepare the whipping cream. Once cooled, add the strawberries and fold in the whipped cream. Refrigerate until set.