Sun Drop is a sweet soft drink, but if you can't get a can of the real thing, you can substitute 7Up or Sprite - but not the diet versions. It's apparently best if you slightly undercook this cake before drizzling on the icing, because this makes the cake stay ultra moist. (As if humidity wouldn't keep it moist! - but I digress.)
US measurements; Aussies note that "pudding" means the creamy kind only.
1 box of lemon cake mix (any kind)
1 small box of instant lemon pudding (any kind)
3/4 c. cooking oil
3 eggs, beaten
1 can (12 oz.) Sun Drop, 7Up, or Sprite
Mix all ingredients together and bake in a Bundt, kugel, or similar ringed cake pan at 375 degrees F for 30 minutes. (This recipe doesn't say but depending on your pan you may wish to butter/flour it first.) Cool slightly and remove from pan.
part 2: Icing
1 cup confectioners' sugar
2 Tbsp. water
2 tsp. lemon extract
Mix ingredients together and pour over top of cake. Slice and serve.