Preheat the oven
to 300°F/150°C/gas 4. Line two cookie sheets with
aluminum foil.
Process the almonds in a food
processor or blender until finely chopped.
Beat
the egg whites, confectioners' sugar, and salt in a
large bowl placed over barely simmering water with
an electric mixer at high speed until stiff peaks
form.
Remove the bowl from the water. Stir in the
almond extract and chopped almonds.
Drop teaspoons
of the mixture 1 inch (2.5 cm) apart onto the
prepared cookie sheets.
Bake for 20-30 minutes, or
until crisp. Transfer the meringues on the foil to
racks and let cool.