Argentine Spice-Rubbed Flank Steak with Salsa Criolla

Online here. Was out of chili powder, so used Lee Kum Kee chili-garlic sauce instead. Impressively make-ahead friendly, straightforward, and quick considering how fancy it turned out. Does well as leftovers, too. I broiled the steak (4-5 min per side for medium rare) instead of grilling it, since I am loath to sacrifice deck or yard space to a BBQ.