Ingredients

• For the bacon turkey burgers:
• 1 pound thickly sliced peppered bacon
  
• 1 extra-large yellow or sweet onion
  
• Salt
  
• 1 pound ground turkey (about 90% lean)
  
• 4 pub or brioche hamburger buns
  
• 4 slices swiss cheese (if they're especially thin slices, double up)
  
• 4 bun-sized butter lettuce leaves (preferably crisper inner leaves)
  

• For the smoky burger spread:
• ¹/₂ cup mayonnaise (homemade is excellent, but store-bought works well)
  
• 2 tablespoons finely minced pickled peppers (sweet or spicy -- your choice)
  
• 1 ¹/₂ tablespoons Dijon mustard
  
• ¹/₂ teaspoon smoked paprika
  
• ¹/₄ teaspoon ground cumin