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Before the invention of the refrigerator, people used a variety of methods to keep food cool, including:
Ice houses: Ice houses on lakes and rivers were an effective way to store food before electricity.
Iceboxes: Iceboxes were wooden coolers with a large block of ice on top that cooled the air and chilled beverages inside.
Cold cellars: Cold cellars were underground or underwater storage options for food.
Storing food in water: Food was stored directly in cold water from rivers and lakes.
Insulated boxes: People built their own iceboxes using insulated boxes and chunks of ice or snow. The boxes were insulated with natural materials like sawdust or seaweed.
Food was preserved through methods such as salting, smoking, drying, or storing in cool, dry places like root cellars.