"a type of bean soup"
Borrowed from Old French jotte 'id.,' from Late Latin iotta "soup." Borrowed from an Insular Celtic language (compare Old Cornish and Old Welsh iot).
From Proto-Celtic *yuto- "porridge." Of unknown origin. Presumably borrowed from a non-Indo-European language.
Celtic: Goidelic: Old Irish íth "porridge;" Brythonic: Old Welsh iot "porridge," Middle Breton yot 'id.' Old Cornish iot 'id.'