I guess since I'm not from New York, I wasn't exposed to Black & White cookies growing up. The first place I actually heard about them was on the TV show "Seinfeld."
I was recently at Claro's Italian Market in Tustin, CA and I picked one up to see what all of the fuss was about.
Yup, there was chocolate frosting on one side and vanilla frosting on the other. But I was completely surprised by the consistency of the "cookie." It wasn't actually a cookie per se, it was more of a small cake.
The cookie was moist, spongy, and not crispy at all! Since I was expecting a cookie, I was a little let down at first, but once I realized what this treat was I began to enjoy it. The chocolate frosting was extremely fudgey, so I had to make sure I was taking an even bite of white and black for the perfect balance.