How do we purify different kinds of vessels or utensils? Boiling water should do the trick. Or maybe "olive water." Plus time - whatever that may mean, given the vague term of "season." A minimum of half the day and half the night - that is, 12 hours, out of 24. Also, one who buys utensils from non-Jews who made them... prepare them for use after the handling by the non-Jews via immersing in a mikveh... or in boiling water...or....heating it to white-hot.... or polishing. The precursor to today's "toveling." Plus, when to use which method, or more than one.