Vinegar and bicarb do a great impersonation of a volcano. Wouldn't they make your blini somewhat bubbly?

Thanks M.

Correct, there is a chemical reaction. Kids love to see it! You'd need the allow the reaction to settle in your tea spoon before putting what is left into the crapes mixture. Try it! One other tip - the pan needs to be absolutely hot before you introduce the mixture to it. cheers!