|~2/3 lb. sirloin tips -- kebabs are good||1/4 cup soy sauce|
|1/4 cup peanut oil||heaping tsp minced garlic|
|heaping tsp dark brown sugar||heaping tsp tomato paste|
|heaping tsp chili powder||rounded tsp cumin powder|
Mix everything but the tips in a bowl; this is the marinade. Place the tips into a one-quart Ziploc. Pour in the marinade; squeeze out the air, and seal. Marinate in the fridge for about an hour, turning it over halfway through to make sure it marinates evenly.
Remove tips from marinade, and pat dry with paper towels. Heat grill pan over medium-high heat (high is too hot, at least on the hot burner) for several minutes, to get good and hot. Grill kebabs to a good sear on each side. Remove from heat, and let rest for several minutes on a plate with a loose tinfoil tent while you finish the rest of the dinner.