Gender and cravings?

So I heard that it's "possible" to predict your baby's gender based on what your craving. Apparently savory cravings mean boy and sweet mean girl. I know I have been hardcore craving onion rings, Mac and cheese, and mashed potatoes and gravy! Maybe it means boy??? But then again I just finished off a pint of Hagen daas Lol  I was just curious (for fun!) if anyone has noticed that to be true :)