an update to encyclopedia entries to show what recipes materials are used in instead of having to go to their production buildings
Grain - Used in: Flour, Porridge, Ale, Pack of Crops, Oil
In the Recipes panel you can switch the yellow toggle at the top to "Ingredient" and I think that is what you're looking for. Hit the Show All check box and it will show you all the recipes that use that ingredient, even if you don't have the production building.
That actually seems like exactly it. I'm a little embarrassed that I didn't find that option.