This chapter has all the hallmarks of 'We didn't get cancelled after all, so let's dive into a completely different kind of magic that I never got around to exploring'. It also shows that the mangaka spent another ten minutes on Wikipedia, in lieu of coming up with anything actually creative, since there wasn't really much thought on exactly what alchemy might entail up until now. Congrats, MC, you have once again accidentally recreated Stone Age technology, this time by the precise alchemical magic of heating something up slowly.