Edible foil

One of the very first projects that we developed for our book was an electric candle cake. We tried several different materials and methods for creating edible circuitry: gold leaf (from Goldschlager), electrolyte-saturated sports-drink-powder, even nontoxic electrode pad gel (YUCK), then finally, edible silver foil. This atomically thin silver leaf is traditionally used as a decorative garnish on Indian sweets. We wrapped it around string licorice. We planted LEDs on top and they lit up! (It was a little more complicated than that—buy our book to find out just how much!) 

Excitement of the day came when we stumbled across this beautiful step-by-step documenting how edible silver foil is made. Enjoy.

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