Mix together 1 tsp smoked paprika, 1 tsp brown sugar, Shetland sea salt, and freshly ground black pepper, and rub 2 rack pork ribs liberally with the mixture.
Put each rack into a cooking pouch and vacuum seal.
Submerge the pouch(es) in the water oven and cook for 48 hours.
for the glaze
In a saucepan, fry 1 medium onion and 2 cloves garlic, finely chopped, in 2 tbsp olive oil until soft.
Add 2 tsp fennel seeds and 1 tsp whole cumin seeds and fry for a minute or two more.
Add 1 tsp smoked paprika, 1 tbsp tomato ketchup, the juice of 1 orange, 2 apples, peeled and grated, 3 splashes Tabasco sauce, 240 ml water, 2 tsp soy sauce2 tsp Worcestershire sauce, 1 tbsp brown sugar, 1 sprig fresh thyme, leaves only, 2 bay leaves and freshly ground black pepper, to taste. Cook over a low heat for half an hour.
Remove from the heat and blend the sauce with a hand-held food processor for 30 seconds. (Alternatively let it cool a little and pour into a blender jar or food processor and blend.)
Remove any pulp left in the sauce by straining through a sieve.
Return the sauce to the heat and reduce it until it is reasonably sticky.
to finish
When you’re ready to eat, remove the ribs from their pouches, spoon over some of the glaze and seal in a frying pan or on the BBQ until the meat starts to blacken a little. Use the remaining glaze as a dipping sauce.