It would be really convenient if information about the mood and energy value of food, drink, and produce were immediately available when looking at vendors or during food creation. Essentially you end up just purchasing or making items blind and hoping that they give you the result you want.
Also, it would be nice to have a tooltip on the vendor screen when an item causes a status effect. Right now you have to take the item and then hover over the status while you are under its effect. Another area where more information would lead to easier decisions.