The history of sponge cake may come from The Opera Cake, french, check Paris Sweets, Dorie Greenspan page 146.
Dalloyau, a french pastry maker may have invented it in 1890, she says it's hard to know for sure.
The original almond sponge is called a jaconde. Traditionally used with mocha or chocolate, variations, today for me is apricot and pistachio, see Pretty Tasty Cakes or Daring Baker
Sep 30, 2007
Does anybody happen to know the history of the Almond sponge cake; I can't find anything (websites or books preferred) Thanks