Good evening, Vietnam. We scoped out the scene (and stuffed ourselves) at Red Medicine — the new Noah Ellis, Jordan Kahn (Michael Mina), and Adam Fleischman (of Umami burger fame) collab you keep hearing about — opened on Mid-Wilshire. What to know before you go:1. Upbeat (loud music, red-lit bar) and casual (cement floors, rugged wood tables), the restaurant’s a go-to for a postwork fix, a preshow meal, or late into the night (it’s open until 2 a.m.). Make it your lunch break come January 3.2. Sit at the bar for the more traditional banh mi (sandwich of country pâté, pork belly, carrot pickle, coriander, Kewpie mayonnaise, green chile, cucumber) or in the dining room for the special banh mi (foie gras, pâté de champagne).3. House cocktails, like the No. 18 (Krome vodka, chile-anise shrub, lime, grapefruit, Peychaud’s bitters, Thai basil, ginger beer), are light. Seasonal sweetbreads, calf’s tongue, and kabocha on the market-driven menu, not so much.4. Family style really means family style. The palm sugar-glazed Snake River Farms American Wagyu beef brisket is available only for parties of five or more, but there’s always enough chicken and dumplings to go around.5. You’ll want to keep the Lime Sabayon with cucumber ice cream and cashew macaroons to yourself.Red Medicine, 8400 Wilshire Boulevard, at South Gale Drive, Mid-City (323-651-5500 or redmedicinela.com).