Spicy Thai Minced Chicken Salad with Peanuts and Celery Leaves

Ingredients

• Oil for deep-frying
• 1 lb. skinless, boneless chicken breast or thigh
• 1/2 teaspoon Thai chile powder, or cayenne
• 4 teaspoons granulated sugar
• 1/2 cup lime juice
• 8 teaspoons Thai fish sauce
• 1 small, hot chile, seeded and minced (or more to taste)
• 4 teaspoons grated fresh ginger
• 1/2 cup smashed roasted peanuts
• 1/4 cup finely minced celery heart
• 1/2 firmly packed cup celery leaves
• 1/4 firmly packed cup cilantro leaves
• 1/4 firmly packed cup shredded mint leaves
• 4 green-leaf lettuce leaves