Grilled Asian Skirt Steak

WHAT YOU'LL NEED

• 1 Knorr® Beef flavored Bouillon Cube(s), crumbled
• 2 tsp. five-spice powder
• 1 tsp. firmly packed light brown sugar
• 1/2 tsp. garlic powder
• 1/4 tsp. ground red pepper
• 3 Tbsp. Hellmann's® or Best Foods® Real Mayonnaise
• 1 lb. skirt steak, cut into 6 pieces
• Lime wedges and fresh cilantro (optional)