The dye-free sprinkles have landed. So have organic gummi bears, gluten-free animal crackers, Pinkleton’s Curious Caramel Corn, and crushed chocolate-gobbed cookies from Portland’s lauded Bakeshop. Carefully curated toppings star at Eb & Bean, an artisan, soft-serve frozen yogurt pioneer that features the milk of happy, co-op cows, one table (communal), and blackboard shout-outs to local purveyors. Dessert fiends are already hooked on the aptly named “Tart” fro-yo, squiggled beneath a brisk blast of marionberry compote and the wild crunch of oat streusel.