I picked up some ground sirloin on the way to work yesterday. Dinner didn’t take long to put together. Peeled and hand-cut the fries and got them soaking in cold water. Put the oil on to heat (350° for the first fry). While the oil was heating up I seasoned and formed the burgers. Seasoning was simple, salt, pepper and a little fresh garlic. Since the sirloin is lean, I coat my hands with olive oil when mixing and shaping just to get a little extra fat into the burgers so they would not be dry. Next I turned on the grill to heat up. I fried the potatoes in two batches and then left them spread out on paper-towels while the burgers cooked.
While the burgers were cooking, the oil was heating up for the second fry, this time to 375°F. Just before the burgers came off the grill, the buns (Kaisers) went on to be toasted. Burgers were plated and the fries went into the hot oil all at the same time, just long enough to turn them golden and crisp. This step is quick, not much more than a minute or so. Drain well on paper-towels and sprinkle with salt (in my case lots of salt).