Tamarind Glazed Meatloaf

Name: Tamarind-Glazed Meatloaf
Ingredients: For the meatloaf:; 3 tablespoons unsalted butter; 1/2 cup fresh bread crumbs; 1/2 cup water; 3 tablespoons canola oil; 1 large red onion, thinly sliced; 2 teaspoons kosher salt; 1-inch piece fresh ginger, peeled and finely minced; 4 garlic cloves, peeled and finely minced; 1/2 jalapeño pepper (cored and seeded for a milder flavor), finely minced; 2 teaspoons ground coriander; 1 teaspoon ground cumin; 1 teaspoon ground peppercorns; 4 portobeIIo mushroom caps (about 1 pound), finely diced; 1/2 teaspoon cayenne pepper; 1 teaspoon garam masala; 2 1/2 pounds ground beef (preferably 80 percent lean); 1 1/4 pounds ground pork; 1 red beII pepper, cored, seeded, and finely chopped; 1/4 cup fresh cilantro, finely chopped; 3 large eggs; 1/2 cup ketchup; 2 ounces Parmigiano-Reggiano cheese, grated; 1/2 teaspoon sweet paprika; For the tamarind glaze:; 1 cup ketchup; 1 teaspoon tamarind paste