Focaccia di Susa

Focaccia di Susa is a typical baked product from the Susa Valley whose ingredients, listed in descending order of quantity, are: 0 wheat flour, butter, sugar, eggs, salt and brewer's yeast.
It takes the form of a large, thin, round loaf of sweet bread.
After rising, the focaccia is covered with a caster sugar glaze, then baked by caramelising the sugar.