Mary Chung’s is a Cambridge Chinese institution whose flavors region-hop from Sichuan to Shandong on a colossal menu filled with Szechuan, Mandarin, and Americanized dishes. Nestle into a well-worn, if somewhat kitschy, red vinyl booth and caution your taste buds in advance of the sheer fire you’re about to unleash on them. If you’re like many of the cult of customers Mary Chung’s has amassed since its establishment in the ‘80s, you’ll likely order the Dun Dun noodles, chewy, almost ramen-like slippery squiggles coated in a spicy peanut sauce whose intense heat levels numb your mouth just enough to convince you that sure, you’ll be able to handle your next dish. That will be Suan La Chow Show, which you can order by simply requesting a “bowl of swans,” and it’s a bowl of dumplings filled with tender pork, gently placed over a bed of bean sprouts, which is buoyed in a spicy, soy-based broth. Bulk up your meal with egg rolls and crab Rangoon, and come around on weekends for dim sum (it’s served Saturdays and Sundays). Mary Chung’s is cash-only, but you’ll probably want to visit the register before you eat, so that you can sniff out the daily specials posted on the adjacent board.