Orange Blossom Cake - cooking recipe

Ingredients

6 egg whites (3/4 c.)
1 tsp. cream of tartar
1/2 tsp. orange extract or 1 tsp. defrosted undiluted orange juice concentrate
pinch of salt (optional)
3 or 4 Tbsp. sugar
1/3 c. sifted all-purpose flour
2 Tbsp. sugar-free orange marmalade
2 Tbsp. orange liqueur or additional orange juice concentrate

Preparation

Line bottom of a nonstick 9 x 5-inch loaf pan (or 8-inch round cake pan) with wax paper.
Using large bowl and electric beater, beat egg whites with cream of tartar, orange extract (or concentrate) and salt, if using, until soft peaks form.
Gradually beat in sugar, 1 tablespoon at a time, until thoroughly dissolved. In several portions, sprinkle flour over surface of beaten whites and fold in carefully with a rubber spatula.
Spoon mixture into the prepared pan and bake in a preheated 350\u00b0 oven for 30 minutes, or until cake tests done.
Before baking, the cake will be very high and puffy; it will be level while baking.
Cook cake by inverting pan and resting edges on the edges of 2 other pans. When completely cool, loosen edges of cake with a spatula and remove from pan.