Coconut Curry Salmon

Name: Coconut Curry Salmon
Ingredients: 3 Scotch bonnet peppers , seeded, stemmed, and chopped (substitute habanero peppers if needed); 1/2 cup white balsamic (substitute apple cider vinegar if needed); Pinch of kosher salt , plus more as needed; Pinch of granulated sugar; 4 tablespoons vegetable or another neutral oil , divided; 4 (6-ounce) fillets Coho salmon (such as Secret Island); 1 tablespoon unsalted butter; 1 medium (9-ounce) yellow onion , finely chopped; 4 garlic cloves , thinly sliced; 3 tablespoons chopped fresh thyme leaves; 1 green bell pepper , finely chopped; 2 tablespoons tomato paste; 3 tablespoons Madras curry powder; 1 (13 1/2-ounce) can full fat coconut milk , well-shaken; 10 ounces vegetable or chicken stock , or water; 1 tablespoon fresh lemon juice , plus more as needed; 5 green onions , thinly sliced, divided; 6 cups cooked rice or coconut rice, for serving