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Canning

 

1. Canning is a method of preserving food, such that its shelf like increases and lasts from 1 year to 5 years. Food item here are processed and sealed in an air tight containers.

2. Nicholas Appert was the first person to come up with the idea of preserving food in glass jars during the first years of Napolean Wars, the only issue was to send them long distances. These glass jars were replaced by cylindrical tins or wroght iron canisters which were later reduced in sizes to form cans with the idea of Peter Durand. Cans were cheaper, quicker and less fragile an option. Cans were then adopted in European countries and US and therefore the rest of the world.

3. Advantages:

Helps saving money

Saves nutritional value

Can last for years

Do not require electricity or refrigeration to store

Preservative and pesticides free food

Off season availability

Can serve as a gift

Portable

You get control of what to can and what to add

Sense of satisfaction of having canned yourself

4.Disadvantages

Time consuming process

Initial start up cost of buying the equipments

Person should know which foods are high risk and which are low

Change in ingredient may require a change in processing

Canning machines are expensive

Growing your own vegetables or fruits to save extra for the purpose of canning may take time

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What is food preservation?