I'm looking at buying a pressure cooker as a Christmas gift. I don't know much about them, I see a bunch in the 6 quart size. Is that the average size? Will a full size canning jar fit into one? I've also found some 8 quart, and one 23 quart. The 23 quart says it's designed for canning, but I'm afraid it will be too large for non-canning use. I've found some with gauges, and some without. I would think a gauge should be pretty important.
I don't know what I'm looking for. Any advice? Thanks!