Step 1:Grill the steaks until medium. Then thinly slice.

Step 2:Add cucumber, green onion, red onion, lemon grass, and red chilies to the beef.

Step 3:Add in lime juice, fish sauce, salt and pepper to the beef. Mix everything well. Garnish with cilantro and mint.

Step 1:To prepare marinade, combine preserves, hoisin, lime juice, cilantro, ginger, and sesame oil in a small bowl. Stir well. Pour into a resealable plastic bag or glass bowl; toss tuna with marinade to coat. Refrigerate for 1 hour.

Step 2:Preheat an outdoor grill for high heat and lightly oil grate.

Step 3:Remove tuna steaks from marinade, shake off excess, and discard remaining marinade. Cook on preheated grill for 4 to 5 minutes per side. Be careful not to overcook - the tuna should be lightly browned on the outside but still slightly pink in the middle. Serve immediately.