1 tbsp garlic powder
250ml/9fl oz ketchup
50ml/2fl oz Worcestershire Sauce
1 tbsp cracked black pepper
½ tbsp chilli powder
100g/3½oz dark muscovado sugar
1 tbsp mustard powder
1 tbsp sea salt flakes
1 tbsp smoked paprika
100ml/3½fl oz cider vinegar
200ml/7fl oz brewed espresso, or strong dark coffee