For those interested in pig knuckles, tripe soup, bo kho, bahn cuon, crab and conch vermicelli, curry, fish stew, crayfish, frog legs, and other authentic Vietnamese small dishes beyond pho, bun and com, check out Lily's Sandwich. They have an excellent bun bo hue and bavarian cream puffs too (absent Beard Papa's in Austin) at good prices.
I've had their sandwiches and Baguette House's, and I prefer Lily's. They're bigger and cheaper, and the fillings are tastier. The owner is honest.
No ambiance--but who cares about that?