You are boxing a pink drip cake when the client leans over the counter. "It's gorgeous. What color additives are in edible glitter, anyway?" You have answered dozens of questions about flavors and fillings. This one makes you freeze, because...

The order is booked. The deposit has cleared. Then the message arrives, and it is one line long: everything vegan, please — including the shimmer. So you pick up the jar you have used for two years and turn it...