I have been asked if I could make a specific type of Mexican cake for a wedding. The cake, he described was white with a custard filling baked into it. It sounded a bit like the lava cake, but he said that the Lava cake is not even similar.
He said it's delicious and brings back memories when he lived with his family in Mexico City as a young child. He now lives in the US and could not provide me with anyone I could contact that might be able to help.
I have already looked on the internet (Hispanic/Latin/Mexican Cakes) to no avail and if CakeCentral can't help, I'll go to a bakery that specializes in Mexican cakes and see if they can help me.
What I am thinkinh is a tres leches cake type. There are a few custard variations. If anything try a mexican dessert book at B&N OR a major book store
There is a type of cake called cocaflan. You can look up recipes on google but it is a layer of flan and cake both baked in a bunt pan at the same time. HTH