Spicy Grilled Beef Kabobs - Adapted from Alton Brown

Start by cutting beef top sirloin into 1 1/2 in. cubes.  Our experience is that you can use cheaper cuts of meat such as beef stew with recipes that are marinated like this one.  Place 3 chopped garlic cloves, 2t smoked paprika, 1/2t ground turmeric, 1t ground cumin, 1t kosher salt, 1/2t fresh ground pepper and 1/3C red wine vinegar in a food processor.  Blend and slowly drizzle in 1/2C olive oil.  Pour the marinade over the meat and refrigerate for 2-4 hrs.  Skewer the meat and grill to your preferred doneness.  We served the skewers with mushroom risotto and asparagus which was also grilled.