How To Make Crunchy, Sticky, Spicy Fried Chicken Sandwiches

Ingredients

• 1/4 cup kosher salt
• 5 garlic cloves
• 1 tablespoon roughly cracked black pepper
• 4 5- to 6-ounce boneless, skin-on chicken breasts
• 1 cup buttermilk
• vegetable oil
• 2 small Persian cucumbers
• 1/3 cup distilled white vinegar
• 3 tablespoons water
• 2 tablespoons sugar
• 2 teaspoons fine sea salt
• 1 teaspoon black peppercorns
• 1 small jalapeno pepper
• 3/4 cup all-purpose flour
• 1/4 cup cornstarch
• 1 teaspoon fine sea salt
• 1 teaspoon sweet paprika
• 1/2 teaspoon freshly ground black pepper
• 1/4 teaspoon cayenne pepper
• 4 good-quality hamburger buns
• Equal parts grainy Dijon mustard and mayonnaise
• 3/4 cup chili garlic sauce
• 3/4 cup honey