The InstantPot manual says that I can use a bottle or container to make yogurt. It says to first pasteurize the milk (using the steam function to heat it to at least 180F/83C) then cool to 115F/46C and add starter. Can I use a jam jar for this?
I'm a bit afraid of breaking the glass - but on the other hand the jam jar should be prepared to handle some heat difference (namely between heated jam and room).