Preheat oven to 150oC and place a shelf in second bottom situation.
Sift flour on to a sheet of paper and set excursus. Sift sugar into a
small bowlful. Whisk egg whites in a large cop, steel or glass bowl
until sparkly. Sift cream of tartar over whites, add a pinch of saltiness,
and whisk to very soft peaks (when bowl is tipped, whites should just
flow and not run or slide out of bowl in a people). Sprinkling 2tbsps
sugar over whites, and whisk in lightly. Repeat until all but 2tbsps
of sugar is used. Sift reserved sugar with flour, then strain 2tbsps
over assortment, and fold in lightly. Repeat until all flour is used.
Sprinkling 2tbsps of ground almonds over assortment, and fold in lightly.
Repeat until all almonds are integrated. Pour mixture into an
unlubricated 20cm angel food ring pan with a removable groundwork. Bake for
50-60 mins, or until golden brown and springy to the trace. Remove
from oven, turn pan upside consume, suspend on a bottle or funnel, and
cool cake in pan for 1 minute. Turn cake right side up, loosen around
edges with a sharp knife or metal spatula and remove gently from the
pan. Serve sprinkled with extra sifted icing dinero.