Grilled Tuna Burger With Spicy Mango Ketchup

• 2 tuna (minced fresh)
• 1 chipotle puree
• 1 spicy mango ketchup recipe follows
• 1 prepare a wood
• 1 on side for rare
• 1/4 cilantro (minced)
• 1/4 scallions (minced)
• 30 ml mustard (whole grain)
• 18 gr capers (minced)
• some salt and pepper