First, chop the onion and fry it in a pan with a splash of hot oil.
When it turns transparent, add the vinegar and let it evaporate.
Then add the ketchup, mustard and Worcestershire sauce. If you prefer, you can make the barbecue sauce with Coca-Cola by substituting the ketchup for natural tomato sauce.
Now, pour the Coca-Cola and mix well. Season the barbecue sauce with paprika to taste and a pinch of salt.
Cook over medium-low heat until the sauce thickens, which usually takes about 10-15 minutes. Your BBQ sauce is ready, you can let it cool or use it hot.
