Where does “tomtegröt” come from?

tomtegröt (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 “tomtegröt”, step by step

tomtegröt 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 tomte

StepLanguageWordMeaning
1SwedishtomteA small human-like creature in Nordic folklore...
2Swedishtomta ground lot, a parcel (of land), that has had, currently has or in the future will have a house built on it. It especially refers either to the land that directly surrounds the house (not uncommonly fenced), even if the total estate might be much bigger, or a legally delineated lot in town-like env
3Old Norsetoft
4Proto-Germanictumþizseemliness, agreement; association, guild,...
5Proto-Indo-Europeandem-to build; to arrange, to put together
Every word from Proto-Indo-European ǵʰer-
tomtegröt — Etymology, Origin & Word History | Etymology Explorer