Bucatini All'amtriciana (Crowd Cow)

Ingredients

• 1/2 pound cured pork jowl, diced into 1/4-1/2-inch pieces
• 3 tablespoons extra-virgin olive oil
• 2 tablespoons red wine vinegar
• 3/4 cup tomato puree
• 1 medium onion, sliced thinly
• up to 1/3 tsp. red pepper flakes (optional)
• 1 tablespoon fresh or dry parsley leaves, chopped finely
• 1 box (12 ounces) bucatini
• 1/2 cup finely grated parmesan cheese