Found a real gem here. $4 bucks a piece and has 6 bars within. Good for 5 years and the taste is similar to a "health bar" you will find on a shelf at GNC or something. Each packet is air tight and is a total of 2400 calories. I just bought a bunch. Four bucks for 2 days of food isn't bad at all.
2400 Calorie S.O.S. Food Bar
2400 Calorie S.O.S. Food Bar