Mary Mueller peddles “sweet tooth provisions” from her three-year-old Castro shop. What it lacks in space, the store makes up for in character: the shelves are painted a sunny yellow and a candy mosaic adorns the wall. Mueller is liberal with samples, doling out gummies and chocolate-covered delicacies to kids and adults alike. The sweets are organized by type, spanning chocolates, gummies, fruit candies and caramels. (Don’t miss the cherry walnut caramels by Walnettos.) In particular, the spot is known as a discerning purveyor of Scandinavian licorice—sweet and salty—and craft chocolate makers like Woodblock and Maison Bouche.