Where does “trollgröt” come from?

trollgröt (Swedish) comes from Swedish gröt, from Old Swedish grøter, from Old Norse grautr, from Proto-Germanic grautaz, from Proto-Indo-European ǵʰer- — to yearn for; to enclose; bowels, intestines.

Ancestry of “trollgröt”, step by step

trollgröt traces back through two separate lines of ancestry.

via Swedish gröt

StepLanguageWordMeaning
1Swedishgrötporridge
2Old Swedishgrøter
3Old Norsegrautrporridge
4Proto-Germanicgrautazcoarse, crude; big, large
5Proto-Indo-Europeanǵʰer-to yearn for; to enclose; bowels, intestines

via Swedish troll

StepLanguageWordMeaning
1Swedishtrolla troll supernatural being
2Old Norsetrǫllwitch, mage, conjurer
3Proto-Germanictruzląa supernatural being; demon; fiend; giant;...
4Proto-Indo-Europeandreh₂-run; to run, escape
Every word from Proto-Indo-European ǵʰer-Every word from Proto-Germanic grautazEvery word from Old Norse grautr