Separate eggs; let stand at room temperature for at least one hour
Pre-heat oven to 375ºF
Sift together flour with 3/4 cups of granulated sugar (recipe says four times, mom does it three times)
Combine egg whites, salt, cream of tartar and flavourings in large mixing bowl
Beat (at no. 12 speed, if you have a Sunbeam) until whites are stiff and hold a peak (1 1/2 to 2 minutes: do beat until dry: do not overbeat)
Sprinkle in rapidly, while beating (number 8 speed) the sifted cup of granulated sugar (about 1 minute); scrape the bowl gently toward beaters, as necessary
Turn speed to very low, and sprinkle in sifted flour-sugar mixture slowly, folding into the whites evenly using the up and over fold motion (about 1 and 1/2 minute)
Remove bowl from mixer; using a rubber spatula, cut through batter, folding over and over a few times
Carefully place batter into ungreased pan, gently pushing into place
Cut through batter with a straight-edged spatula, moving it around and around in widening circles 6 times without lifting the spatula
Bake immediately for about 35 minutes or until cake tester comes out completely clean
Invert immediately; hang until completely cold
Insert straight-edged spatula between cake and edge of pan to release cake, pushing it around the edge of the pan to release the cake
Release cake from pan; do the same around the centre hold, then on the bottom
Place a plate over the top of the cake; invert onto the plate
Can be eaten immediately, but is usually best eaten the next day (cover with glass cake cover until next day)
Mom always wraps extremely well in plastic wrap and freezes for at least one night, then ices the cake while frozen (She prepares the icing before taking the cake out of the freezer)