It goes further back. Napoleon offered a prize in 1795 for some way to preserve food for soldiers.[1] The result was "canning" - heating, boiling, and sealing in an airtight container. Originally in glass jars. Later metal cans. Finally vacuum-packed plastic.
Current products include MREs for the military, which are actually somewhat hard to buy commercially since Warnock got tired of dealing with preppers. They really want to sell these things by the container load. There are all kinds of knock-offs available. The real military MREs are designed for young soldiers in good condition doing heavy work, so three of them contain almost 4,000 calories. Civilian versions tend to be smaller portions.
There's also the Humanitarian Daily Ration. It's kosher, halal, vegetarian, lactose-free, and nut-free. Also air-droppable without a parachute. It's basically lentils and beans.
It's intended for people on the edge of starvation. The US military used to give out MREs in crises, but that was too much concentrated energy food for someone nearly starving and could sicken them.
Current products include MREs for the military, which are actually somewhat hard to buy commercially since Warnock got tired of dealing with preppers. They really want to sell these things by the container load. There are all kinds of knock-offs available. The real military MREs are designed for young soldiers in good condition doing heavy work, so three of them contain almost 4,000 calories. Civilian versions tend to be smaller portions.
There's also the Humanitarian Daily Ration. It's kosher, halal, vegetarian, lactose-free, and nut-free. Also air-droppable without a parachute. It's basically lentils and beans. It's intended for people on the edge of starvation. The US military used to give out MREs in crises, but that was too much concentrated energy food for someone nearly starving and could sicken them.
[1] https://www.npr.org/sections/money/2012/03/01/147751097/why-...