Thermoserver help... it went cold!
Help - I have a brand new (oval) thermoserver and tried to set my yoghurt in it yesterday. After an hour or so I touched the side of the dish and it was stony cold. Checked the yoghurt and it too was cold!
I heated the thermoserver before using it by half filling with boiling water for about 5 minutes with the lid on. Tipped the water out and dried it just before putting in the youghurt.
What did I do wrong?