Mrs. Pai's Beef Bulgogi

Toss steak with whiskey. Cover tightly, and refrigerate 8 hours. Transfer steak to a large bowl. Whisk together soup base and sugar until sugar dissolves, and pour over steak. Add garlic, scallions, sesame seeds, and sesame oil, and toss to combine thoroughly. Cover tightly, and refrigerate at least 4 hours and up to 8 hours.

Let steak sit at room temperature 1 hour, and season with salt. Meanwhile, heat grill to medium-high. Grill steak 1 to 2 minutes per side for medium-rare. Serve with radicchio and lettuce leaves and herbs.