Preheat oven to 375 degrees.
In bowl of an electric mixer, beat sugar, egg yolks, milk and vanilla until light and creamy. Set aside in a separate bowl.
In bowl of the electric mixer, beat egg whites with cream of tartar until medium firm.
Combine flour and baking powder. Fold and sift flour in egg yolk mix alternately with egg whites.
Cover the bottom of a 9-inch round pan with parchment paper. Grease and flour the bottom and sides of pan. Spread cake mixture over the bottom of pan. Bake 12 to 15 minutes. Cake should be springy and seet in center.
Unmold cake over a wire rack. Cool.
Garnish the cake:
Slice into two layers.
Whip the cream with icing sugar and vanilla pudding until thick.
Spread strawberry jam over cakes. Top with sliced strawberries and whipped cream.
Stack layers together. Decorate top with berries.