Preheat oven to 350 degrees. In a small bowl, mix soy milk and apple cider vinegar together until frothy. Set aside.

In another bowl, sift flour, baking powder and salt together. Set aside.

In a medium mixing bowl, cream margarine and sugar together until light and fluffy.

Alternate adding soy milk mixture and flour mixture a little at a time, until all is moistened. Beat until well mixed.

Spoon into lined cupcake tins, filling each about 1/2 full. Bake at 350 degrees for about 20 minutes, or until a toothpick inserted in the middle comes out clean.

* To serve, make a little hole in top of cupcake and spoon in a little jam. Decorate if you like.