Portable backpack back

Could you sustain yourself with a bottomless bowl of soup and some chopsticks? - being bottomless

If it can not soup without substance, and had to eat with chopsticks (I do not drink!) Is it possible to have enough food to get to survive? If so, what kind of soup would be better (remember, we are talking here about the soup, not stew - soup, not "meat" - should be sweet!)
How many hours to eat, should every day? "