Take a look at stories of Thjálfi (Norse) and Pelops (Greek), there's a lot of similarities.
1. Death and ressurrection of someone who was eaten.
2. Someone eating a part of a severed, cooked body
3. A young boy taken by a god as his servant.
4. Pelops taken from a kind of cauldron.
I think these myths could be compared to Trita's, Indra's helper as Thjalfi was Thor's and Pelops was Poseidon's.
JS Lopes