It is getting harder and harder to find reliable sources on the early tower. I am only partly convinced by the following source I found in a bundle of papyrus scrolls floating in a marsh near my home.
Apparently the review of food writer Peristalsus of Gusto from his ancient classic 1001 Nights Out:
"The tower is like a big wedding cake, luscious and lavish. I want to eat the whole thing with a small spoon, so it will last."