RSA Food Preservation 101

2. The ____ and Mason brothers both developed jars for canning that we still use today.
6. Mass __________ of refrigerators did not begin until 1945.
8. The fermenting of cabbage along with a littl salt is how ________ is made.
10. Before the invention of freezers, wealthy Americans built _________ to keep food cold/frozen.
13. Wine, yogurt, cheese, sauerkraut, & Kim chi are all made by the process of ___________.
15. During World War II, people were encouraged to plant ______ gardens.
17. American ________ Jacob Perkins built the first compression refrigeration system in 1834.
18. Before refrigeration, people stored things like carrots, beets, & potatoes in underground rooms called ____ cellars.
19. Preserving foods in vinegar or another acid is called _______.

1. In 1913, the first ________ refrigerator was invented.
3. The first pressure canner was called an ________.
4. Pressure canning is used to preserve foods that have a ____ acid content.
5. In ancient times, _____ was used as a preservative because it forced water out of yeast and bacteria cells.
6. If foods are not properly preserved it can cause food _________.
7. During the French Revolution, __________ offered 12,000 francs to anyone who could develop a new way to preserve food for his starving army.
9. Nicolas ______ discovered the process of canning.
11. Certain sources of salt contained nitrates also called _________ This caused meat to retain it’s red color.
12. Modern freeze drying uses the process of ___________ which changes the ice in food directly into water vapor.
14. The oldest method of food preservation was probably ________.
16. A type of food poisoning that can be fatal.