Dean and DeLuca is always a great bet as long as you know you're going to be spending money. Like others have mentioned, there are almost endless amounts of samples peppered around the store so there's a good deal to try before you buy (or just to milk a free quick snack out of them). Plenty of seating inside and out, and it's great for when you have a couple of hours to spend chatting with an old friend. From prepared foods to groceries to desserts and coffees, you'll pretty much be set here.