2 teaspoons Sriracha chili sauce or 1 teaspoon hot pepper sauce
1/2 teaspoon cornstarch
Optional: Sesame seeds and thinly sliced green onions
Cut beef into 1/4-in.-thick strips. In a large bowl, whisk the first 7 ingredients until blended. Pour 1 cup marinade into a shallow dish. Add beef; turn to coat. Refrigerate, covered, 2-8 hours. Cover and refrigerate remaining marinade.
Drain beef, discarding marinade in dish. Thread beef onto 12 metal or soaked wooden skewers. Grill kabobs, covered, over medium-high heat or broil 4 in. from heat until meat reaches desired doneness (for medium-rare, a thermometer should read 135°; medium, 140°; medium-well, 145°), 4-5 minutes, turning occasionally and basting frequently using 1/2 cup of reserved marinade.
To make glaze, bring remaining marinade (about 3/4 cup) to a boil; whisk in 1/2 teaspoon cornstarch. Cook, whisking constantly until thickened, 1-2 minutes. Brush kabobs with glaze just before serving. If desired, top with sesame seeds and sliced green onions.