Valentine’s Day is fast approaching, and some chains, such as Baskin-Robbins and Krispy Kreme, are betting that, 10 months into the pandemic, some heart-shaped treats are in order. Bruster’s Real Ice Cream is being more subtle — its seasonal treats both have a splash of red — while Voodoo Doughnut’s monthly special is blue for some reason (but check back next week to see what it has planned for Feb. 14).