How do you use potassium nitrate? I got 999 of them and got no clue of how to use them. Is it an explosive ingredient? I don't think there's any dynamite recipe here.
Edit: Well maybe that's not really important for now. Wanna ask, if you completed every quest will it effect the ending? Like the poison quest I mean. I completed the quest but got a red mark. And if it did effect the ending, which one will be counted as complete or failure? the red/green color or quest completion description?