1 1/2 cups skim milk
3 egg whites
1 teaspoon vanilla extract
3 teaspoons fine lemon juice
1 1/2 teaspoons vegetable oil
1 teaspoon lemon extract
4 eggs
1 cup butter, softened
1 cup brown sugar
3/4 cup all-purpose flour
1 teaspoon baking powder
2 cups crispy cornflake crackers
salt to taste
2 tablespoons lemon zest