Sweet and Spicy Applesauce Recipe

Name: Sweet and Spicy Applesauce Recipe
Ingredients: 3 tablespoons unsalted butter (42g), divided; 1 stick cinnamon stick; 1 tablespoon (4g) coriander seeds, cracked; 1 medium red onion (8 ounces; 225g) , finely chopped (about 1 cup); 1 teaspoon minced jalapeño, plus more to taste; 2 garlic cloves (10g), minced; 1 teaspoon ground ginger or 1 teaspoon grated fresh ginger; 3/4 teaspoon Diamond Crystal kosher salt; for table salt, use about half as much by volume or the same by weight; 1 cup (7 1/2 ounces; 212g) packed dark brown sugar, plus more to taste; 1 cup (240ml) apple cider; 2/3 cup (160ml) apple cider vinegar, plus more as desired; 1 teaspoon (8 dashes) Angostura bitters (optional); 1 teaspoon (4g) black /brown mustard seeds toasted (and cracked if desired); 8 medium-sized (3 pounds 6 ounces, 1.52kg) Cripps Pink apples, also known as Pink Lady apples, peeled, cored and cut into 1-inch chunks; 3 tablespoons (45ml) fresh lemon juice from 1 lemon