California Burgers | America's Test Kitchen

Ingredients

• 1 1/2 pounds 85 percent lean ground beef
• 2 tablespoons finely chopped jarred pickled jalapeños , plus 2 tablespoons jalapeno brine
• Salt and pepper
• 1 tablespoon vegetable oil
• 4 slices deli Swiss cheese
• 1 ripe avocado , pitted, skinned, and sliced thin
• 1/2 small red onion , sliced thin
• 4 hamburger buns
• 1 ripe tomato , cored and sliced thin