Monkey gland sauce

Monkey gland sauce is a dark-coloured, thick, sweet and tangy sauce from South Africa. It is typically served as a topping for grilled steaks or burgers, but is also used as a marinade, a dipping sauce for onion rings and chips, or on roasted potatoes. It has been featured as a restaurant item since the 1930s, becoming a South African restaurant and fast food staple condiment.