Ingredients

4 slices white bread, torn into large pieces 

1/2 cup whole milk 

3 garlic cloves 

1 small onion, coarsely chopped 

1 large egg 

Coarse salt and freshly ground pepper 

1 1/4 pounds ground chuck (80 percent to 85 percent lean) 

1 1/4 pounds ground pork (80 percent to 85 percent lean) 

Preparation

Working in batches, pulse bread in a food processor until medium-coarse crumbs form (you should have 3 cups breadcrumbs). Transfer to a bowl. Stir in milk; let stand for 10 minutes.

Meanwhile, puree garlic and onion until smooth. Pulse in egg, 2 1/2 teaspoons salt, and 3/4 teaspoon pepper to combine.

Mix garlic mixture into breadcrumb mixture. Add beef and pork, and mix until just barely combined; do not overmix. Divide mixture into 2 portions, and continue with variations.