I had some problems about how to answer this. I was thinking "Food isn't really something I encounter in games, where your health is regenerated by crouching or drinking potions. So how the hell am I going to answer this?!"
Then it hit me. The most obvious answer I could go for. The most desirable video game food out there.
THE MOTHERFUDGING CAKE FROM PORTAL!!
DAMN YOU GlaDOS!! DAMN YOU AS FAR AS I CAN CAST YOU INTO THE DIGITAL OBLIVION THAT IS THE RECYCLE BIN! DAMN YOU!!
GlaDOS keeps telling the player character that the cake isn't a lie, only to admit it was later. Being a lover of chocolate cakes, which is what the one in Portal looks like, I am gutted we can never get even a small slice of that particular bakery product. I hope you are happy with yourself GlaDOS. This made your destruction more satisfying since you never shared the goods and I really
wanted that bloody cake!! 
So screw you GlaDOS! The cake is
not a lie and I will get some!!
