I suspect you could probably source pork bladder in quantity, relatively cheap from slaughterhouses. Never know that kind of thing might be a specialty delicacy

I suspect you could probably source pork bladder in quantity, relatively cheap from slaughterhouses. Never know that kind of thing might be a specialty delicacy somewhere and it turn out you can't afford it. It might turn out they're the vital ingredient for automobile airbags this whole time and we never knew.