While edible beauty items aren't on the top of my list (I take it they're not on the top of yours either since Jessica Simpson's Dessert makeup line went bust), it is important to me that what I use, especially on my lips, at least tastes palatable and not synthetic.
For example, what I love most about Sarah Happ's Lip Scrub is that it contains sugar, almonds, cinnamon, and all kinds of other sweet ingredients that you can lick right off of your lips! Also, minty lip glosses like the ones from Lola and vanilla-scented ones from Besame make me feel more kissable.
Joey New York has even created a line of lip glosses and lipsticks based around studies on how flavors and fragrances in lip products can help you battle the urge to smoke and overeat. Conversely, they can also help you become more alluring to the opposite sex.
Isn't it all just so fascinating? If you could design your own flavored beauty product, what would you want it to taste like?