Pork Burgers with Sauerkraut and Gruyère

These burgers are a cross between a patty melt and a Reuben. For the best flavor, avoid canned sauerkraut and look for the bagged version in the supermarket meat case. 

• 1/2 lb. bacon (about 9 slices)
• 1 lb. ground pork
• 1 tsp. caraway seeds, lightly crushed
• 1/2 tsp. freshly grated nutmeg
• 4 slices Gruyère
• 1 cup sauerkraut, rinsed and drained
• Dijon mustard to taste
• 8 slices seeded or marble rye bread, toasted

Cook the bacon in a 12-inch skillet over medium heat, turning occasionally with tongs, until crisp, 6 to 8 minutes. Remove the skillet from the heat. Transfer the bacon to a cutting board with a slotted spoon, let cool slightly, and chop into small pieces. Drain all but 2 Tbs. of the fat from the skillet.

In a large bowl, thoroughly mix the bacon, ground pork, caraway seeds,
and nutmeg with your hands. Form into four 1/2-inch-thick patties.

Return the skillet to medium heat. When the bacon fat is hot, add the
burgers and cook for 6 minutes. Flip the burgers, cover the skillet, andcontinue to cook until an instant-read thermometer inserted into a
burger registers 160°F for well done, about 5 minutes more. Turn off theheat, top each with a slice of the cheese, cover, and let sit until thecheese has melted, about 1 minute.

Meanwhile, heat the sauerkraut in a small saucepan over medium heat until warm.

Spread mustard on each slice of rye toast. Serve the burgers between the toast, topped with the sauerkraut.