For this
recipe an Italian waffle iron is needed (electric
ones are available). These have shallow round
moulds about 18 cm/7 inches in diameter, and are
marked with a criss-cross or 'waffle' pattern.
They are sold in specialist kitchen shops and
catering suppliers.
Remove the butter
from the refrigerator 1 hour before you need it. Cut
it into small cubes and leave in a bowl to soften.
Using a wooden spoon, beat the butter until it forms
a smooth cream. Add the sugar and beat in.
Add the egg yolks
one at a time, beating with a balloon whisk to form
a soft paste. Whisk the egg whites until stiff, then
delicately fold them into the mixture using a metal
spoon.
Heat a waffle iron
on both sides over a medium heat. Brush the iron
with olive oil. Spread a 2 mm/1/16 inch thick
layer of the paste over the waffle iron. Close the
iron, put it on the heat and cook for 1 minute on
each side. Remove the cialde with the point of a
knife and form into a cone while still hot.