What do item effects mean?

[Binnes]

For example, I made some recovery items, some things are "Filling", "Salty", "Warm", "Cold"

Do these have some effect on how good the item is??

[Dazenith]

Hello there.
If you go to Menu -> Encyclopedia -> Effect/Trait -> Effect
You will get a list of all effects you have discovered and a brief description of what they do.
For example:

Filling:
"Sits in the stomach, delaying your turn in battle a small amount Also restores LP"

Salty:
"Reduces the wait time after the target's next turn by a small amount."

Warm:
"Warms the body, increasing the target's speed a little."

Cold:
"Coldness slows down the body, reducing the target's speed a little."

If you require any other info though have a look at my guide or feel free to ask.
http://steamcommunity.com/sharedfiles/filedetails/?id=859099483
It has a link inside it to a Google Sheet with lots of information on areas, monsters and recipes.