I think Joel meant ask your friend for the recipe or maybe just some hints to get you started in the right direction.
What is corn milk?
If it is seriously milk made from corn, FA has a corn flavor. Paired with maybe TPA dairy milk, FA or Real Flavors condensed milk. Perhaps a little sweetener. I thought someone else had a cream of corn flavor but I can't find it. I think One on One has a cornbread or corn puffs that might work?