Preheat oven to 375 degrees F.
Score the pork belly several times on fatty side. Season with salt and pepper, to taste.
Coat a large Dutch oven, over medium heat, with oil. Add the pork belly, 1 piece at a time, scored side down, to the pot. Sear slowly to render the fat on all sides for 3 to 4 minutes. Remove from pan and set aside. Drain off the excess fat leaving 3 to 4 tablespoons and add the garlic. Brown the garlic, then add the onions and cook until slightly colored, about 2 to 3 minutes.
Stir in the brown sugar and balsamic and cook until syrupy, about 1 to 2 minutes. Add the Dijon and whisk until smooth. Stir in the rosemary, mushrooms, peppers and broths and bring to a boil. Return the pork belly to the pan, cover and put in the oven. Braise until fork tender, about 1 1/2 to 2 hours. Remove from oven and transfer the pork belly to a platter.
Pesto mayo:
Mix all the ingredients with a whisk in a small bowl and set aside.
To assemble sandwiches:
Spread pesto mayonnaise liberally on each side of the toasted rolls. Put a piece of pork belly and several slices of smoked mozzarella on the bottom halves. Arrange the bottom halves of assembled sandwich on a sheet pan and put back in the oven until cheese melts and browns, about 1 to 2 minutes. Remove from the oven, cover with the roll tops and serve.

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Nutrition Facts

Per Serving Per 100 g

Amount Per 1 Serving
Calories	719.47 Kcal (3012 kJ)
Calories from fat	491.58 Kcal
		% Daily Value*
Total Fat	54.62g	84%
Cholesterol	46.01mg	15%
Sodium	1622.3mg	68%
Potassium	459.42mg	10%
Total Carbs	26.65g	9%
Sugars	19.24g	77%
Dietary Fiber	3.03g	12%
Protein	28.29g	57%
Vitamin C	11.9mg	20%
Vitamin A	0.9mg	30%
Iron	70.5mg	391%
Calcium	703.1mg	70%

Amount Per 100 g
Calories	154.62 Kcal (647 kJ)
Calories from fat	105.64 Kcal
		% Daily Value*
Total Fat	11.74g	84%
Cholesterol	9.89mg	15%
Sodium	348.63mg	68%
Potassium	98.73mg	10%
Total Carbs	5.73g	9%
Sugars	4.13g	77%
Dietary Fiber	0.65g	12%
Protein	6.08g	57%
Vitamin C	2.5mg	20%
Vitamin A	0.2mg	30%
Iron	15.1mg	391%
Calcium	151.1mg	70%

* Percent Daily Values are based on a 2000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
Find out how many calories should you eat.

Tastes

salty
savory
bitter
sweet

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