Legends of heroes: trails of cold steel 2?

i replay the game on ps3 called the legends of heroes : trails of cold steel 2 . and i want to achieve all the tropheis when i chech the ricipes there is an item called tomato jelly and to activate it says me to use as a consuming item, how is that to use it a consuming item ??? please help me
Answers

Ninefinger is a Pedophile

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Thomas S

This is a recipe you have to buy as a book, then use to make it active. If you have already bought the recipe, open your inventory and check your Key items area. The book should be in there. If you use it you should learn it and be able to cook it.