1.5 c sugar (12 oz)
2 in vanilla bean
10 eggs, separated, room temp
.5 c fresh oj
1 tbsp orange zest
.25 tsp salt
.75 c cake meal
.5 c potato starch
middle of oven 325
combine sugar and vanilla bean in food processor till fine
beat egg yolks until thick and pale (4 min)
sift sugar mixture onto yolks
continue to beat until thick and pale and tripled in volume (5 min)
gradually beat in oj and zest
separately, beat egg whites and salt till stiff but not dry, set aside
combine cake meal and potato starch in sifter and sift onto yolk mixture. fold gently but thoroughly. then same with whites
spoon into 10 inch tube pan. bake abt 50 min until top springs back when gently touched
cool for an hour