1. In a re-sealable plastic bag combine the beef, Sazon, cumin, hot sauce, olive oil, scallions, garlic, a pinch of salt, and a few grinds of pepper. Tightly seal the bag, pressing out as much air as possible. Squish it around a bit to mix the seasoning and coat the beef, then refrigerate overnight, or at least 6 hours. Two hours before you are ready to grill the beef, remove the bag from the fridge, give it a toss and rest the bag on the counter at room temperature.