How to prepare Grilled Chicken Sandwich with Caesar-ish Dressing ? – Coba Grill Hong Kong

Ingredients

• 1 Tbsp. Dijon mustard
• 2 tsp. Worcestershire sauce
• 2 garlic cloves, finely grated
• 2 Tbsp. plus 2 tsp. fresh lemon juice
• 2 tsp. freshly ground black pepper, plus more
• ⅓ cup plus 2 tsp. extra-virgin olive oil, plus more for the grill
• 6 Tbsp. mayonnaise
• ¼ cup chopped cornichons (about 9)
• Kosher salt
• 4 large or 6 small skinless, boneless chicken thighs (about 1½ lb. total)
• 4 brioche buns, split
• 1 medium fennel bulb, thinly sliced crosswise, fronds reserved
• 1 cup basil leaves
• ¼ tsp. crushed red pepper flakes (optional)
• 1 small head Little Gem lettuce
• 1 medium tomato, sliced ¼