text: One of these objects is owned by a giant whose wife births a fully armed son every six weeks.
full_question: One of these objects is owned by a giant whose wife births a fully armed son every six weeks. That owner of one of these objects, who escapes a plot to roast him alive in an iron house, is named Llasar Llaes Gyfnewid. Along with a staff and a platter, Bran gives one to Matholwch as reparations, which Efnisien sacrifices himself to destroy and stop it from resurrecting the Irish dead. A non-Odin father of Tyr owns one of these objects, which was retrieved in a quest including the fishing trip in which Thor hooks Jormungand. Hymir owns a massive one of these that the gods bring to Aegir's feast for brewing beer. In one named Odrerir, Kvasir's blood is mixed with honey to make the mead of poetry. For 10 points, name these metal objects in which Ceridwen and other legendary witches brew potions.
first_sentence: One of these objects is owned by a giant whose wife births a fully armed son every six weeks.
raw_answer: cauldrons [or kettles; or pots; accept any descriptive answer indicating a large open container for mixing or storing liquid]