Like Koala, there are too many good foods I have eaten over the years to pick the best.
The worst and most horrifying that I remember was cow's tongue.

YUCKKKYYY!!! I do not know what possessed my mom to try and feed 10 kids cow's tongue.

Although, some of my brothers and sisters actually liked it. EWWWW!
Next to cow's tongue was tuna casserole. Another big YUCK among us kids that we still laugh about today. My mom made if frequently and it was always so gross. Of course, we had to eat what was on our plates so I ate it. But still . . .YUCK!