What are pommes Anna? It is a French recipe based on potatoes and butter. Pommes Anna are crunchy and delicious and with just a few steps you will prepare an irresistible appetiser. They look like a sort of potato cake, which is then cut into slices or squares, which makes for a perfect preparation for an aperitif. Legend has it that a famous chef of the Napoleonic era invented this recipe in honour of a beautiful courtesan named Anna. Here's how to make pommes Anna.