Heat up oven to 180C.
Melt the cream cheese and condensed milk in a double boiler.
Whip in the egg yolks one at a time.
Add the lime juice and zest and then the oil and flours.
Beat the egg whites, cream of tartar and sugar to stiff peaks.
Folk in mixture 2 into mixture 1, using 1/3 of mixture 2 at a time.
Fully line a 10 inch diameter cake tin, and wrap a tin foil on the OUTSIDE of the cake tin.
Pour the cake batter than give it a few whacks to get rid of big bubbles.
Bake on the medium shelf. Once the cake goes inside, lower the heat to 165C.
Bake for 1 hour.