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 - It learns about preserved food

 - Preservation by dryness
 - About preserved food

 - Preservation by fumigation
 - Preservation by salt

 - Other preservation
 - Preservation by suger

 - Modern preservation
 - Preservation by vinegar
 - A pictorial book to expand knowledge  - Microbes pictorial book  - Rare preserved foods pictorial book  - Space-foods pictorial book  - A Japanese preserved food culture pictorial book
 - It challenges making preserved food

 - It challenges with fish and shellfishes

 - It challenges with vegetables  - It challenges with fruit

 - It challenges with meat  - It challenges with dairy products
 - Preserved food game are challenged  - Preserved food quiz are challenged  - Processing method quiz are challenged  - Preserved food a-ha experience are
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