Naturally, if the humans should happen to wander into the kitchen, you will follow them there and wrap yourself around the legs and meow . Purring is effective as well. Be sure that you keep looking at the refrigerator. Humans are a bit slow and might not get the idea if you don't make yourself extremely clear. The methods I discussed above are not enough when it is dinner time.
Humans are capable of limited mental reception of thoughts.
You may have to jump down, run toward the kitchen, return and repeat the process several times before it soaks in to the human. Just keep at it. I suggest that you start this process 15-30 minutes before the time you actually expect to eat. With particularly dense humans, it may take that long to get the idea across. Good luck, and let me know how your training project turns out.