Turn image into various layers of coffee flowing

This is what a business in United States was looking for in their graphic design

Need an image that is similar to the attached. The lower representing the flow of dark brewed coffee. The middle will be a lighter color of coffee that contains more milk like a Latte, and the upper most representing an almost milky color like a cappuccino.
The over all shape is find but I need less like chocolate and more fluid like coffee. Highlighs should be added like light shining off a fluid.
Needs to be in .ai vector deliverable. Read more