Lidey's Grilled Tuna Steaks with Wasabi Mayo

• 4 Fresh tuna steaks (8 oz. each)
• 5 Tbsp. toasted sesame oil
• 4 Tbsp. soy sauce
• 3 Tbsp. teriyaki sauce
• 2 tsp. garlic, minced
• 1 1/2 Tbsp. honey
• 1 Tbsp. rice vinegar
• 1 Tbsp. fresh ginger root, grated on a microplane
• Zest of 1 lime

Wasabi Mayo (Makes 1 cup)

• 1/2 cup mayonnaise
• 7 oz. Greek yogurt
• 3 tsp. prepared wasabi*
• 2 tsp. freshly squeezed lime juice
• 3/4 tsp. kosher salt
• 1/2 tsp. lime zest