Tofu in black bean sauce is a popular Chinese dish that combines the delicate flavors of tofu with the rich and savory taste of black bean sauce. The tofu is first marinated in a mixture of soy sauce, ginger, and garlic, then stir-fried until golden brown. The black bean sauce, made from fermented black beans, garlic, and chili, adds a depth of umami flavor to the dish. This vegetarian-friendly recipe is quick and easy to make, and pairs well with steamed rice or noodles.