Swedish Meatballs

Bahan-bahan (6 porsi)

• 1 cup Panko breadcrumbs
• 1/3 cup milk
• 1 pound ground beef
• 1 pound ground pork
• 4 cloves garlic, pressed or minced
• 2 eggs
• 2 tablespoons finely-chopped fresh parsley, plus extra for garnish
• 1/4 cup grated yellow onion
• 1 teaspoon fine sea salt
• 1/2 teaspoon each: black pepper, ground allspice, ground ginger, ground nutmeg
• 2 tablespoons olive oil, divided
• 1/3 cup butter
• 1/3 cup all-purpose flour
• 3 cups beef broth
• 2/3 cup heavy cream
• 2 teaspoons Dijon mustard (optional)
• fine sea salt and freshly-ground black pepper