Where does “pokulering” come from?

pokulering (Swedish) comes from Swedish pokulera, from Medieval Latin poculare, from Latin pōculum, from Proto-Italic pōtlom, from Proto-Indo-European péh₃tlom, from Proto-Indo-European peh₃- — to drink.

Ancestry of “pokulering”, step by step

StepLanguageWordMeaning
1Swedishpokuleradrink alcohol, carouse
2Medieval Latinpoculare—
3Latinpōculuma drinking cup
4Proto-Italicpōtlom—
5Proto-Indo-Europeanpéh₃tlominstrument for drinking
6Proto-Indo-Europeanpeh₃-to drink
Every word from Proto-Indo-European peh₃- →Every word from Proto-Indo-European péh₃tlom →Every word from Proto-Italic pōtlom →