An easy way to get uniform, paper-thin steak slices is to cut the meat a little thicker than called for and then flatten the slices with a meat pounder.Plus: More Beef Recipes and Tips
Slice the steak across the grain 1/4 inch thick; pound the slices 1/8 inch thick.
In a bowl, combine the sugar, salt, cayenne and black pepper. Brush both sides of the beef slices with the lime juice and sprinkle with the spices. Stack the slices and refrigerate overnight.
Preheat a cast-iron skillet. Lightly brush the pan with oil, add the steak in a single layer and cook in batches over high heat until medium rare and slightly charred, about 30 seconds per side. Serve at once with Garlic Rice.