Where does “tatty cake” come from?

tatty cake (English) comes from Scots tattie cake, from Scots tattie, from Scots pitattie — potato.

tatty cake (English): A potato scone; made from flour and cooked...

Definitions

  1. A potato scone; made from flour and cooked...

Ancestry of “tatty cake”, step by step

StepLanguageWordMeaning
1Scotstattie caketatty scone, the potato scone
2ScotstattieDiminutive of pitattie
3Scotspitattiepotato
Every word from Scots pitattieEvery word from Scots tattieEvery word from Scots tattie cake