Of course OZ probably calls them something unique, but there are Anaheim peppers, Hungarian Wax Peppers, and I think you could get away with banana peppers too, although they are bit smaller, might have to use 20 or 30 of them.

I'm sure there are many more varieties of large not-too-spicy peppers that you could use in this dish too, just drawing a blank on names other than what I mentioned.

!ENGAGE 25