We have some friends who are in PV right now and if I understood it correctly (note - this information is second hand!), they were not able to bring any food into Mexico with them (peanuts and I am not sure what else). Is this a new rule?
I am not a big breakfast eater and usually bring granola bars with for myself, along with a bag of candy/chips etc. for the kids to eat on the plane to and from Mexico (as well as in Mexico) - stuff like starburst, jolly ranchers, licorice, pringles.
I do this every year when we go to Mexico. Please tell me this was random and not a new requirement!.