Headed to Asian Market in Waltham for the first time today and was so pleasantly surprised by their selection of ready-to-eat foods! I got the five-spice beef (lean, could be more flavorful, but tastes authentic and only $5.99 for a nearly a pound), spicy beef with tripe (can't remember the exact price, but cheap, looks like they took some of the five-spice beef, added some tendon and tripe, marinated with red chili oil, liked it better than the five-spice beef), and vegetarian mix (kao fu, a shanghai treat of bran dough that has a spongy texture, and wood ear, straw mushroms, peanuts, bean curd sheets; on the sweet side and not heavy with soy sauce... this was my favorite of the three dishes I tried).
But the BEST is their "hamburger". I don't know what else to call it. You buy it behind the counter near where you enter. It's the five-spice beef in a pan fried sesame bun. Nice and crispy on the outside, soft on the inside with a hoisin-like sauce. Great deal at $1.75.
I think I'm going to dropping by more often to supplement my dinners.