How to cook
Caramelize the sugar with the butter. Pour it into a cake form and arrange pieces of peaches on top. Leave it to harden. Beat the eggs with the sugar.
To 1, add the coffee dissolved in a little water. Pour the white part over the peaches. Arrange the biscotti on top and pour on the coffee mixture.
Bake at 356°F (180 °C) for 40 min. Take it out and leave to cool. Carefully invert into a suitable plate.