These miniature marshmallows come in a variety of pastel colors. They can be used in a variety of ways: as small electrolytic capacitors, as glass-passivated components like diodes, and if painted suitably, as resistors in a circuit.
Note: The cat stole one and ate it (!) while I was setting up this shot.
Part of the circuitry snacks project: Edible models of functioning electronic circuits. Designed for fun, for geeks, for kids, and for teaching and learning electronics.