Chocolate Pieces Puzzle

I just had to share this sweet chocolate animation with you guys! I know that missing piece puzzle was recycled so many times by now, but I’m sure you’ll admit it’s fun to see something so simple yet so amazing.

If I were a food company, I’d apply this principle immediately to generate some extra profit! What do you say? I can’t seem to pinpoint the answer, yet I’m perfectly aware you can’t generate matter out of nothing!