Question of unknown origin

How long could your household subsist on what's in the refrigerator and pantry? This assumes that there is electricity and there is tap-water and there is fuel for cooking but that gardens and stores are not available. Another question that would follow from that, although not posed originally, is: what would you save until last? Would this be something you really like? Or would it be something you detest but would eat if necessary to survive? We've been having a lot of fun with this, but I'm not sure what my answers would be, other than that any true perishables would have to be consumed first. We once lived where many people kept a year's supply of provisions always on hand, rotating out what was no longer good for use. When I was a kid, everybody talked about "the squirrel shelf," meaning, figuratively, the pantry equivalent of what our bushy-tailed friends store for winter. We always have flour, cereal for eating both cold and hot, rice, potatoes, powdered buttermilk, split peas, nuts, onions, garlic, ginger, and canned beef and chicken broth on hand, as well as canned fruits and juices. When we lived fifty and sixty miles over bad roads from where there was any real shopping, we thought a lot about keeping staples stocked, including powdered milk for enriching things baked. Eggs and various creatures freshly killed or caught, whether domesticated or wild, were usually available there. Some of this shades over into what people try to keep in their refrigerators at all times.