Drinking from a firehose

The quickest way to empty a pantry is to Not Buy Any New Food. You can't visit the grocery store again until the last ramen brick is gone. You can't go out to dinner while there is still a can of baked beans in there somewhere.

My solution to this is to periodically give everything that's been there for a year or so to a food pantry. Someone there might not appreciate it, but they'll eat it.