The story
From bastable (“earthenware or (later) cast-iron pot with three short legs and a lid, used for baking over a fire”) + cake.
Etymology from Wiktionary, CC BY-SA 4.0.
bastable cake
ba·sta·ble cakeToday it means: A round loaf of soda bread that is baked in a bastable (“an earthenware or cast-iron pot used for baking over a fire”). Full definition →