What happens when you mix baking soda & vinegar?

We usually do Science experiments on Tuesdays and Thursdays. Last week, we learned how vinegar and baking soda react to blow up a balloon (see picture). "A" loves coming up with her own "science experiments". In this same picture, you can see her concoction that she created in her cup. It started out with vinegar and baking soda, but then she added pepper, ice, sugar, and salt. I finally talked her into using all of this pent up energy to mix ingredients to help me mix something up for dinner ;-)