With plate lunches in a posh atmosphere, Abacus might be one of Lafayette’s best-kept secrets. The deco building has gleaming hardwood floors, sleek lines and a nice dark bar. A buffet menu rotates through the week, stuffed turkey wings and barbecue brisket are faves, but there’s a bigger universe at Abacus. Daily braised fish, multiple salads and usually a superb gumbo are on the buffet line. The chef’s award-winning creole bread pudding is also served daily.