[bryanlarsen]

I highly doubt a perpetual stew would be at boiling temps, the stew would disappear too quickly. I would think it'd be at slow cooker temperatures, 80 - 90C. High enough to kill off the nasties but low enough to not be boiling.

[maplant]

It’s probably simmering, but it also probably boils on occasion. You’re not losing stew anyway, you’re just losing water

[bryanlarsen]

80C - 90C is simmering, yes.