2-3 tbsp raw sugar (such as
Barbados or Demerara), for roiling out
sugar crystals, to decorate
1/2 cup/75 g
confectioners'/icing sugar
2 tbsp hot
water
Method:
Toast the
whole almonds in a skillet over medium heat for
5-7 minutes, or until lightly golden.
Transfer the
almonds to a food processor, add 2 tablespoons
of the superfine sugar, and process until finely
ground.
Beat the egg
whites and salt in a large bowl with an electric
mixer at medium speed until frothy. With mixer
at high speed, gradually add the remaining
superfine sugar, beating until stiff, glossy
peaks form.
Use a large
rubber spatula to fold in the toasted ground
almond mixture, 2 cups
(300
g) finely
ground almonds, cashews, and lemon and orange
zests to form a stiff dough.
Press the
dough into a disk, wrap in plastic wrap, and
refrigerate for 30 minutes. Preheat the oven to
300°F/150°C/ gas 2.
Line four
cookie sheets with parchment paper. Discard the
plastic wrap. Roll out the dough on a surface
lightly dusted with raw sugar to a thickness of
1/8 inch (3 mm).
Use a sharp
knife to cut the dough into 1 1/2-inch (4-cm)
squares. Gather the dough scraps, re-roll, and
continue cutting out cookies until all the dough
is used.
Transfer the
cookies to the prepared cookie sheets, placing
them 1 inch (2.5 cm) apart.
Bake, one
sheet at a time, for 12-15 minutes, or until
just golden around the edges. Cool on the sheets
until the cookies firm slightly. Transfer to
racks to finish cooling.
Mix the
confectioners' sugar and water in a small bowl
and spread over the cookies. Sprinkle with the
sugar crystals.