Step 1

In a small bowl, combine tomato paste, fish sauce, salt, onion powder, and garlic powder and mix together well.

Step 2

Take sirloin steak and use a sharp knife to lightly scour the top of the steak by running the knife very lightly across the top forming a grid patterns, cutting a fourth of a centimeter deep.

Step 3

Then rub the paste on the sirloin steaks.

Step 4

Once rubbed, place steaks on wire rack set in rimmed baking sheet, and let rest for 1 hour.

Step 5

After 30 minutes of rest time, prepare the grill. Let it heat thoroughly.

Step 6

In the meantime, prepare the spice rub.

Step 7

Toast chiles, cumin, coriander, pepper flakes, and peppercorns in 10-inch skillet over medium-low heat, stirring frequently, until just beginning to smoke, about 3 to 4 minutes.

Step 8

Transfer to plate to cool for about 5 minutes.

Step 9

After cooled, grind spices in spice grinder or in mortar with pestle until coarsely ground.

Step 10

Transfer spices to bowl and stir in sugar, paprika, and cloves.

Step 11

When grill is hot, grab spices, and sprinkle half of the spice rub on the top of each sirloin steak, then flip and sprinkle remaining spices on other half.

Step 12

Place steaks over the hottest part of the grill and cook until browned and charred on both sides, 3 to 4 minutes per side. (125 is medium rare). Cook until desired doneness is achieved.

Step 13

Transfer steaks to a clean wire rack then let rest for 10 minutes before slicing and serving.