These velvety, vegan beans get a lift from lemon, but they also hold a smoky secret. Aromatics are often sweated in fat to bring out their sweetness, but crank the heat and char them instead for, as Tejal Rao wrote, “serious, almost meatlike depth of flavor.” This is a common technique in pho, black-eyed peas and other long simmers, but it also develops flavor in quicker dishes. After searing lemon wedges, their blackened bits scatter throughout beans, asparagus and coconut milk, creating a…