Where does “blue potato” come from?

blue potato (English) comes from English Blue, from Middle English blēwe, from Anglo-Norman blew, from Middle French bleu, from Old French blöe, from Latvian blāvus, from Old High German blāo, from Proto-West Germanic blāu — yellow, blond, grey.

blue potato (English): A potato characterized by its blue or purple skin and flesh (a result of high concentrations of anthocyanins) and earthy, slightly sweet flavor

Definitions

  1. A potato characterized by its blue or purple skin and flesh (a result of high concentrations of anthocyanins) and earthy, slightly sweet flavor

Ancestry of “blue potato”, step by step

blue potato traces back through two separate lines of ancestry.

via English Blue

StepLanguageWordMeaning
1EnglishBlueA letterman at Oxford or Cambridge; A member of...
2Middle Englishblēwe
3Anglo-Normanblewblue
4Middle Frenchbleublue
5Old Frenchblöeblue
6Latvianblāvusaccusative plural masculine form of blāvs
7Old High Germanblāoblue, dark, grey; blue; yellow
8Proto-West Germanicblāublue
9Proto-Germanicblēwazblue; a dark bluish or grey colour, black
10Proto-Indo-Europeanbʰlēw-yellow, blond, grey

via English potato

StepLanguageWordMeaning
1EnglishpotatoThe tuber of a plant, "Solanum tuberosum", eaten...
2Spanishpatatapotato; piece of rubbish
3Taínobatatasweet potato

Words derived from “blue potato

Every word from Proto-Indo-European bʰlēw-Every word from Proto-Germanic blēwazEvery word from Proto-West Germanic blāu