Serve with tomato ketchup or brown sauce and a fried egg or baked beans.
startsat60.com However, the classic mole version is the variety called mole poblano, which is a dark red or brown sauce served over meat.
en.wikipedia.org Burgers from this type of outlet are usually served without any form of salad only fried onions and a choice of tomato ketchup, mustard or brown sauce.
en.wikipedia.org Popular toppings include tomato sauce, mustard, brown sauce, ketchup, steak sauce, peppers, onions, sauerkraut, chili, and salsa.
en.wikipedia.org Crispy chow mein is usually topped with a thick brown sauce, while steamed chow mein is mixed with soy sauce before being served.
en.wikipedia.org