We decided to go to Spruce during a week night to help our chances of finding a seat. The dinning room is full on most nights with a little-on-the-pricey-side dinner menu. I was here to try the highly recommended Spruce Burger for which you must order and eat at the bar. The burger is hefty one with a dense (almost like an english muffin) bun. I simply topped mine with grilled onions and cheddar. It was well-seasoned and served with a house aioli and fries. San Francisco doesn't seem to like fresh, hand-cut fries since I haven't seen any since my time here. If you're looking for a very simple yet delicious burger, this one doesn't disappoint.