Where does “fersk” come from?

fersk (Old Saxon) comes from Proto-West Germanic frisk, from Proto-Germanic friskaz, from Proto-Indo-European preysk- — fresh.

Ancestry of “fersk”, step by step

StepLanguageWordMeaning
1Proto-West Germanicfriskfresh; unsalted
2Proto-Germanicfriskazfresh; not salty, unsalted
3Proto-Indo-Europeanpreysk-fresh
Every word from Proto-Indo-European preysk- →Every word from Proto-Germanic friskaz →Every word from Proto-West Germanic frisk →