All in one sitting. You get one condiment of choice, and a large glass of water. Bills can be torn up before consumption but nothing is stopping you from housing full Benjamins and digging for gold in the bathroom later. I think I could probably eat at least 10, and I would pick BBQ sauce.
US bank notes are a blend of 75% cotton and 25% linen plus trace amounts of whatever is in the ink and security features.