To make the bread, add all the dry ingredients to the bowl of a stand mixer. Combine using a dough hook, gradually adding the butter.
Add the water and continue to mix to form a dough. Knead on medium speed in the mixer for about 5 minutes, then remove the dough and allow to rest for 20 minutes, covered in the bowl.
Preheat the oven to 200C/180C Fan/Gas 6. Alternatively, preheat a deep-fat fryer to 180C. (CAUTION: hot oil can be dangerous. Do not leave unattended.)
Roll the dough into balls (8 in total) then flatten into 2.5cm/1in thick rounds. Bake for 15–20 minutes or deep fry for 6–9 minutes, until golden brown.
To make the salt fish, heat the oil in a saucepan and add the onions, garlic, pepper, chilli and thyme. Sweat gently for 10 minutes until soft. Add the salt cod, tomato and paprika and cook for 5 minutes, then stir in the spring onions and continue to cook for another 5 minutes. Taste and season with black pepper.
Stuff the salt fish inside the bakes and serve with Caribbean hot sauce alongside.
