Canned tomatoes, or tinned tomatoes, are tomatoes, usually peeled, that are sealed into a can after having been processed by heat. [1]
Industrially produced canned tomatoes are internationally a staple product [2] and subject to regular market analysis [3] as well as trade considerations. [4] [5]
Home canned tomatoes may be prepared in a number of ways. [6] However, safety measures need to be taken, since improperly canned tomatoes can cause botulism poisoning, whether produced industrially or at home. [7]
To ensure safe acidity in whole, crushed, or juiced tomatoes, add two tablespoons of bottled lemon juice or 1/2 teaspoon of citric acid per quart of tomatoes.