Directly dumping fermented black soybeans from the plastic pouch into a skillet ruins a dish. The curing process leaves crystalline salt crusts across the skins that overwhelm surrounding ingredients and burn quickly against dry cast iron.
Proper handling starts with rinsing salted black beans. Measure the required quantity, usually one to two tablespoons for a standard four-serving stir-fry, into a small mesh strainer. Run cold tap water over the beans for 15 to 30 seconds, gently swirling them with your fingers to wash away exterior brine and dried dust. Do not soak them in a bowl for extended periods; prolonged soaking leaches out the water-soluble glutamates, leaving behind waterlogged, flavorless hulls.
Once rinsed, pat the beans thoroughly dry on a paper towel. Place them in a small ramekin or on a cutting board, then press them firmly with the flat side of a Chinese cleaver or the back of a fork. The goal is not to puree the beans into paste, but to crack their skins open. Cracking exposes the soft, enzyme-ripened interior directly to cooking oil while keeping the individual beans intact. For classic Cantonese preparations, smash the beans alongside two cloves of garlic and a coin of ginger, blending their juices before introducing them to the hot pan.
