if you have discovered all necessary parts for a crafting recipe then it will show at the craft table listing required materials and amounts. If you don't have the necessary materials on you to make it then it will show greyed and not craftable.

If you haven't discovered all materials needed for a recipe than the recipe will not show, for example the wolf cape won't show until you find a wolf trophy for the first time even if you have found all other materials for making it and vice versa