Openings: A seafood shanty in the heart of downtown? Complete with greasy onion rings and frappes? It’s true. The elegant, proper Mooncusser Fish House expands with Cusser’s Roast Beef & Seafood, a fast-casual takeout window slated to open on May 7. The street-level spot (304 Stuart St.) will sell North Shore style roast beef sandwiches with barbecue sauce, mayonnaise, and cheese; hot and cold lobster rolls; fish tacos; and hot dogs sourced from Moody’s Delicatessen & Provisions. It’s open for lunch weekdays from 11:30 a.m. until 2 p.m.
The South End gets spicier with Burro Bar, which replaces La Motta’s (1357 Washington St. at Waltham Street). It’s the area’s second Burro Bar; the Brookline original opened last year serving Mexican street food, and there’s also larger sibling, The Painted Burro, in Somerville’s Davis Square. The South End version combines greatest hits from the Brookline and Somerville locations, plus new additions like whole pig’s head tacos for up to four people.
In other Mexican food news, Wegmans in Natick (1245 Worcester St.) welcomes Blue Dalia Restaurant & Tequila Bar, part of the two-story, 146,500-square-foot grocery megaplex at the Natick Mall. Fortify yourself before shopping with poblano and cheese tamales, enchiladas with mole, ceviche, and spicy honey margaritas overseen by culinary director (and Mexico City native) Roberto Santibañez.
The Back Bay’s B3 (160 Massachusetts Ave. at Belvidere Street), known for live music from nearby Berklee College of Music students, adds new executive chef Jeffrey Salazar (New York’s GATO and Bar Americain); he’s remade the menu with Southern style notes such as Creole-spiced deviled eggs, cornmeal-crusted catfish, pimento cheeseburgers, and a roasted pig’s head. For dessert, red velvet cheesecake.
Conversions: The ground level of Harvard Square’s Les Sablons (2 Bennett St. at Bennett Alley) becomes the Oyster Bar at Les Sablons this weekend, with a new menu by Chef Jeremy Sewall (lobster rangoon, fried Island Creek oysters, tinned cockles) plus dirty martinis and Negronis from cocktail maven Jackson Cannon. It’s open from 4 p.m. on weekdays and from 2:30 p.m. on weekends.
Coming Soon: Breakfast and lunch café Vester opens in Kendall Square’s old Ames Street Deli space (73 Ames St. at Main Street), run by Nicole Liu. Her sister, Nadia Liu Spellman, opens a branch of Weston favorite Dumpling Daughter in the adjacent Study space. Both restaurants are slated to launch in July. Dumpling Daughter serves dumplings, of course, plus street foods like tea-simmered eggs and curried fish balls.