Here is my styrofoam container: I made the hole with a piece of hot wire. With the Anova sitting on the lid, the bottom of the unit is about 5 mm from the bottom of the container, so there is no need to heat more water than necessary. Capacity is 13.5 litres (about 3.5 US gallons). I’ll add a small hole in the opposite corner so steam can escape somewhere other than around the Anova. I’ve tested this with a gallon of boiling water. No issues with the styrofoam deforming or the like and
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