Seperate eggs - place the egg whites in a mixing bowl and set aside. In a separate bowl put the egg yolks.

Add the creamcheese to the egg yolks and mix with handheld mixer until well blended. Set aside

Add the salt and cream of tartar to the egg whites and beat on high speed with handheld mixer until stiff peaks form. Slowly add the egg yolk creamcheese mixer into the egg whites. Fold in with spatula slowly until no white streaks appear.