What are the best Snacks you've found that work during a Game?

Brennan has a point here. Almonds, or any nut, makes a very good snack. It's energy dense and somewhat healthy. The important things for me in a snack are twofold.

You should be able to eat it quickly. It kills flow if I have to chew for 2 minutes and everybody has to wait. This is especially the case if you're the GM. As a bonus, if you don't have to chew so much it is also less distracting in online games, where microphones tend to pick up everything.

Second it should not make too much of a mess. Chips for example crumble everywhere and leave a sticky or fatty residue. If you play with minis or a map, this can be really bothersome.

Nuts fit these criterions perfectly. But every now and then we take a 5 minute break and that's were I munch on a fine chocolate chip cookie.