Syrup would be a cool idea that could be used for a bunch of different recipes. You could either get it directly by cutting down a tree, clicking on a tree with a bottle, or you could get sap (which could be used for something else) from a tree, and then you smelt it into syrup. The syrup could be part of a waffle or pancake recipe (made with syrup, wheat, milk, and egg?), oatmeal (syrup, wheat, milk, and bowl?), or it could be eaten by itself for like half a heart.