''Literature/DragonCauldron'' is the penultimate book of the ''Literature/DragonSeries'' by Creator/LaurenceYep. It was first published in 1991 and is a direct sequel to the earlier books, ''Literature/DragonOfTheLostSea'' and ''Literature/DragonSteel''. After ''Dragon Cauldron'', the events in the ''Dragon Series'' are tied up in the final installation, ''Literature/DragonWar''.

After escaping King Sambar XII's undersea palace, [[FiveManBand Shimmer, Thorn, Monkey, Indigo and Civet]] set out to repair Baldy's Cauldron, after it was damaged in the events of ''Literature/DragonSteel''. The five end up on an enchanted island that disables all magic and is impossible to fly or swim away from. A mysterious dog provides them a means of escaping, but doing this unwittingly unleashes the [[BigBad Nameless One]] into the world, an ancient and powerful evil.

* BigBad: The Boneless King.
* GagNose: Shimmer, being a dragon, is rather vain about the length of her snout. When she takes on a human disguise, she gives herself a ridiculously large nose, and because of this, is found out almost immediately.
* {{Hellfire}}: Living fire, a kind of LostTechnology entombed with the Nameless One. It can burn underwater.
* HeroicSacrifice: Twice [[spoiler: Civet]] gives up her life to allow the others time to flee, and [[spoiler: Thorn]] sacrifices his soul to repair Baldy's Cauldron.
* LostTechnology: Living fire.
* MagicCauldron: Fixing one of these is central to the plot.
* NonHumanSidekick: Snowgoose, the Nameless One's huge white dog.
* NoSell: The Boneless King can cast spells that make flight and other magic impossible.
* NoWaterproofingInTheFuture: There is a very old tiara set with a pearl that causes the wearer to become possessed by the spirit of a long-dead sorceress. They manage to destroy the pearl by submerging it in wine. Wine is acidic and will dissolve a pearl, but a) not that fast and b) you'd think intensely magical ones would have some kind of protection on them.
* PowerSource: Civet used up all her magic powers to wreak havoc on the Inland Sea and River Glen. There's a whole BigLippedAlligatorMoment where she puts on a magic tiara and starts spouting prophecies, with the motivation behind it being to recharge her depleted magical powers.
* RedemptionEqualsDeath: [[spoiler:Civet]] sacrifices herself to let the others escape, saying that her debt is paid.
* SealedEvilInACan: The Nameless One, who is sealed in a patch of skin on an enchanted island.
* SoulJar: Baldy's Cauldron. Sort of. It's powered by a soul, and the soul that powers it becomes agelessly immortal. However, it comes at the cost of the person losing their bodily form and becoming the actual cauldron, [[AndIMustScream unable to move, speak, or even control the way their soul is going to be used]].
* SpeakOfTheDevil: The Nameless One.
* TortureTechnician: A cheerful and hairy man who believes one should always do one's job well. He's hurt by being called a torturer and prefers the term "facilitator".
* TheUnfavourite: Thorn slips down to this spot after the incident with the tiara.