The doughnuts-make-me-go-nuts 2010s have passed, but the simple pleasure of Doughnut Vault’s pistachio old-fashioned persists. Its interior is tender, its pretty green veneer delivers a faint floral note and just enough sweetness, and the craggy, glaze-grabbing petals of split dough that develop during frying — the hallmark of a good old-fashioned — are always in full bloom. $4. 401 N. Franklin St., River North