Sauce
Start by making shallow vertical cuts on the pork belly’s skin then make shallow diagonal cuts.
Flip the meat over, season it with the salt, the black pepper, the sweet paprika, the butter at room temperature, the sprig of chopped rosemary, the crushed garlic cloves, spread evenly over the meat and set aside.
In a large skillet over medium to low heat, add the butter and stir until completely melted.
Add the brown sugar and stir until the sugar is completely melted.
Next, add the onions sliced into thick rings and fry until golden brown.
Add the meat we prepared on top of some pieces of string and top it with the onions we prepared.
Cover with the grated carrots, add another 1.5kg of pork belly cut in the same way we cut the first piece and season in the same way,
Then tie it with the pieces of string, take to a preheated oven at 180° C (350° F) and roast for 1 hour and 30 minutes.
After this time has passed, in a small bowl, add the mustard, the ketchup, the honey, the soy sauce and mix.
Next, spread this mixture over the meat using a brush.
Return it to the oven and roast for another 30 minutes.
Serve.