Sound like you are craving some good old fashioned SODIUM. Yep... salt. It's possible that your electrolytes are a little low or out of balance.
Any chance you have access to a V8??? It's not the best, but its a quick and fairly harmless sodium infusion... and the savoriness might help you too.
I can't do salt for medical reasons, but I do use the "low sodium" little V8 cans for a potassium hit when I'm low. It really helps!