Grapes can create plasma in a microwave because of the way microwaves interact with their high water content and the small distance between the grape halves. When two grape halves (or even a whole grape with a connected skin) are placed close together in a microwave, the microwaves cause the water molecules inside to become excited and generate heat. The narrow gap between the grapes acts like a tiny antenna, concentrating the electromagnetic energy.This intense concentration of energy can ioniz