try pot

noun1

1. •
   A large pot used to remove and render the oil from blubber obtained from cetaceans (such as whales and dolphins), from pinnipeds (such as walruses and seals), and (historically, to a lesser extent) from penguins.

   • Along Salamanca Wharf […] was a reminder of what first made the early colony of Tasmania: a large black whaler's trypot, used to boil stripped whale blubber so as to produce oil. — 2020