Where does “calveren” come from?

calveren (Middle English) comes from Middle English calver, from Old English calwer — jelly.

Ancestry of “calveren”, step by step

StepLanguageWordMeaning
1Middle EnglishcalverHaving curd-like flakes throughout
2Old Englishcalwerjelly
Every word from Old English calwer →Every word from Middle English calver →