I think we all know that they can a lot of their food... veggies, fruit, and meat.
But there are many that don't realize how they keep food fresh without electric.
Some have spring houses, like our neighbors and Johnston Farms ,https://www.johnstonfarmohio.com/Exhibits/exhibits.php had one.
Here are some pics I found on the internet
Most have an ice house to hold huge blocks of ice. This is NOT like a freezer. It's more for just keeping things cold. Like using a cooler to camping.
Here is some pics from the internet of ice houses.