Add the unsalted butter to a medium saucepan and place over a medium heat. When the butter has melted, add the onion and fry until lovely a soft. This is normally about 5 minutes.
2 tbsp unsalted butter, 40 g onion
Add the garlic and quickly stir for 30 seconds until the beautiful aroma is obvious, but you don’t want the garlic to go brown.
5 cloves garlic
Add the tomato ketchup, Worcestershire sauce, apple cider vinegar, honey and the smoked paprika and stir well to combine.