A New Englander used once had to hitch a ride to New Orleans to find a proper beignet. But with the brand-new opening of Jason Santos’ Buttermilk and Bourbon, the trip just got a lot less arduous. These are the real deal: four Cafe du Monde-style fritters piled with powdered sugar and served with freshly whipped vanilla bean mascarpone frosting for dipping. The Back Bay den perfectly executes all manner of Southern cuisine, but just because you’re full of Nashville hot chicken doesn’t mean you shouldn’t save a little room for dessert.