Preheat oven to 375°F.

Spray a 11 x15 baking/jellyroll pan with a light spritz of Pam. Fit with waxed paper and spray with cooking Pam again.

Whip eggs, sugar, vanilla and water until light. Mix in dry ingredients.

Pour thin batter unto sheet. Bake until sponge is golden and springs to the touch.

Turn out on cloth wrung in cold water. Remove waxed paper. Spread with jam.

Using the cloth as an aid, roll up the cake into a roll and trim the ends.

Sprinkle with confectioner sugar.