Vanilla

"Take a whiff of vanilla extract right before digging into
any delectable meal, and you might just eat less of it. That's
because smelling a satisfying rich scent (like, you guessed it,
vanilla) can trick your brain into thinking you've eaten more than
you actually have, says Alan Hirsch, MD, founder of the Smell and
Taste Treatment and Research Foundation. "If you smell a delicious
aroma before you take a bite of something indulgent, you'll lose
the sensory excitement earlier," he explains. "This cues your body
to feel content sooner, so you'll eat less."

"Sweet Tip! Don't know where to store your vanilla beans? Pop
them in with granulated sugar in an airtight container.
Bonus: The vanilla perfumes the sugar grains slightly."

-Health Magazine April 2011