You don't need a recipe. Any variation of these ingredients works. If you look at ten different recipes online you'll see ten different amounts for each thing. A soufflé version works very well, just lighten the whole thing by beating the egg whites, and so do the additives that he rejects. The best cakes I've made were heavy with lemon rind and juice, and with considerably less cream cheese, butter, and a little flour.
Water drips from the lid. You can make a tinfoil top for your cake pan like a hat.
His wax paper looks a lot like parchment paper.
You can do the same thing stovetop without pressure.