written by Jen Stevenson NOLA DOUGHNUTS Mardi Gras is just a king-cake-splattered March memory, but National Doughnut Day is June 7, and brother-sister duo Rob Herkes and Connie DeMerell’s Portland doughnut shops blend the best of both worlds with their New Orleans-inspired “la’ssants,” uniquely flaky square doughnuts made with a croissant-like dough, French technique, and European grass-fed butter. Sip your chicory coffee with hot, made-to-order beignets dipped in housemade raspberry mocha sauce. 365 N STATE ST. LAKE OSWEGO 110 NW 10TH AVE. PORTLAND www.noladoughnuts.com SISTERS BAKERY Sure, Sisters is known for its stunning natural beauty, abundance of outdoorsy to-dos, charming Old West storefronts and celebrated late summer folk festival. But fried-dough devotees come for the good old-fashioned doughnuts—soft, squishy, raised, glazed, iced, spiced, sugared and/or sprinkled. Try the epic “pinecone,” a yeast doughnut as delicately ribbed as its namesake, with a sweet stripe of…