Can I make a neverending Soup in an instantpot?
I've actually tried it. It didn't work very well for me, but it might work better for you.
The problem is, cookers like the Instant Pot are designed for quick pressure cooking first and foremost. While they have a &quot;slow cook&quot; or &quot;keep warm&quot; setting, the heating element is still driven at high power, just at a lower duty cycle. Over time, that encourages solids to settle to the bottom and dehydrate and burn. (In contrast, a slow cooker operates at a lower power and heats to a lower temperature.)
However, the motion of the truck might actually help you out here by agitating the soup. If the soup doesn't have anything starchy (like beans or potatoes) that might be sufficient to prevent burning.