RavenF0xx

I figured out what I am doing wrong. I was accidentaly using crushed chromite in place of saltpeter. So thank you both for your answers. I was not looking closely enough at my ingredients, and now my problem is solved. Making sturdy leather will go so much more smoothly now.

I was double checking that it would not cook the sulfuric acid in a residue covered pot, when I checked to see if I could make it in a cooking pot. It would not cook there either, but I made two batches last night with no problem. is my recipe wrong here?

I have never used cooking pots for non-foods until 1.20. I have recently been trying to make chromium sulfate. After the first step my pot became residue covered, and the only thing the game says I can't cook in it is food. I tried to make a second batch of sulfuric acid in the same pot but it would not cook. It just used my fuel and the pot stayed cold. So I ended up using three pots for the whole process to make enough chromium sulfate for three hides. There has to be a way to make more without having to constantly make pots. Is there a way to reuse pots for non-foods? Is this just a bug?