Yogurt shops have proliferated across D.C. in the last several years, though until last December, all of them were of the frozen variety. Last month, Yola opened up on Connecticut Avenue, just south of Dupont Circle. Not unlike many of the other yogurt places around town, they’ve got the toppings bar laden with fruit, muesli, agave nectar and coconut shavings. They have the all-lowercase logo, playful color scheme and the commitment to natural ingredients and sustainability, too. But instead of cups of fro-yo swirled high, they’re layering parfaits with regular yogurt.