Preheat oven to 285 F
In a double boiler, melt together milk, cream cheese and butter. Set aside and cool.
once the mixture is cooled, add 6 egg yolks, lemon zest. Whisk like crazy (you don't want lumps or scrambled eggs)
To this mixture, add the flour and corn meal and whisk to get a smooth batter.
In a separate bowl or mixer , add all the 6 egg whites and beat on high, add the 1/4 cup sugar gradually until you have firm peaks in the egg whites.
Fold the egg whites gently into the first mixture.
Pour into a round cake pan and bake in a water bath (so you can set up a large turkey roaster with hot water inside and place the round cake pan into it).
If you are using a silicone bake pan you don't need to line it. If not, line it with parchment and butter to prevent sticking.
Bake for 40 minutes