Mineral Baths are prepared for Sophie and Fitz by Elwin in Flashback. Although they are called baths, mineral baths are actually a yellow-green slime that is spread across bruises. Unfortunately, the substance smells like "rotting onions" and Elwin insists that Sophie and Fitz do not want to know what it is made of. The purpose of a mineral bath is to put strength into damaged bones. Sophie describes the bath as "soaking in sunshine", at a loss for words. It also helps her arm recover after a Neverseen attack.