You can also use 2 1/4 teaspoons roasted peanuts, ground into a fine powder. The spice blend can also be made in a food processor or with a mortar and pestle. If you don't have a grill pan, you can also use a cast-iron skillet or saute pan. If using an outdoor grill, skewer the beef on soaked 12-inch bamboo skewers. You can also use the suya spice blend on peeled and deveined jumbo shrimp or boneless chicken thighs, cut into 2-inch pieces.