[a fool in paradise]

You’ll eat less cake if you pour a bottle of vinegar into the mix...

But yes, vinegar does have some healthy properties.

[WOBBLY BOB]

or just eat British food.

[numberonepal]

You’ll eat less cake if you pour a bottle of vinegar into the mix...

Red Velvet Cake has vinegar as an ingredient.

[beaversmom]

http://www.recipezaar.com/1940s-Vinegar-Cake-Egg-Free-160494
1940s Vinegar Cake

But not enough vinegar to do you any good or any harm for that matter.