brown sauce
US /braʊn sɔːs/
UK /braʊn sɔːs/

1.
salsa marrone
a savory, dark brown condiment, often made from a blend of tomatoes, molasses, dates, apples, spices, and vinegar, commonly served with full English breakfasts, bacon sandwiches, and chips (fries)
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He always puts brown sauce on his bacon sandwich.
Mette sempre la salsa marrone sul suo panino al bacon.
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Do you prefer ketchup or brown sauce with your chips?
Preferisci il ketchup o la salsa marrone con le patatine?