I'm making mashed potatoes!
In one pot in the Anova steam oven in sous vide mode went 1280g sliced potatoes (1/4"), a pint of cream, and a stick of butter.
The oven is set to 197ºF, 100% steam for an hour. Here's the recipe.
I'll let you know how it goes.
Edited to add that the mashed potaotes were a bit too watery. But, I had converted the original recipe rather loosely. The mashed potatoes had dried sufficiently by the second day they were used.
So this is a reasonable recipe/practise.