Salsa di soia is a condiment made from soybeans that originated in China. It is a versatile sauce that can be used as a marinade, dip, or seasoning. The sauce has a savory and slightly sweet taste, with a thick and sticky texture. It is made from fermented soybeans, which gives it a rich and complex flavor. Salsa di soia is a popular ingredient in Asian cuisine, and is commonly used in dishes such as stir-fries, noodles, and dumplings. It can also be used as a dip for vegetables or as a marinade for meats.