pba: #1 even half a fly is assur. See Yad Yehuda 104 that even the Shach is not meikil on something that can be seen after great tircha and removed.”
Honestly, whatever the halacha says, I would throw the entire pot out, If I knew even a tiny piece of a bug was in my food, I would never be able to eat it, even if it was ENTIRELY removed. I once had a really yummy tuna sandwich on my desk at work. I was about to pick it up, when a cockroach merely walked past it (NEVER touched it at all). I could not bring myself to take a bite.