A classic Sichuan Spicy and Numbing Beef that reveals the Chinese restaurant secret technique of oil velveting (滑油). The beef is marinated and coated in a starchy slurry, then briefly poached in warm oil to lock in moisture for an ultra-tender, silky texture, before being stir-fried with bean sprouts, chilies, and Sichuan peppercorn powder for a bold, numbing-spicy dish.
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