I spilled milk in it this last weekend in Scotland and I thought 'Oh cr@p, that's going to be nasty' Firstly, I am still using the carton of milk that I took with me and secondly, when I got home to empty it, the spilled milk was frozen into a puddle in the bottom. You can put an ice tray on the edge of the plate, so I understand, and direct contact will freeze water when on max.
45 litres was big enough for me. I had an 8 pack of Bombardier (Morrison's - £1.00 - 500ml bottle. Come on) Milk, three tins of G and T, three packs of cheese, three tins of grapefruit, 2 tubs of humous, six pack of pork and pickle pies.
I mean how much DO you want in there?
Most of the time it was on low as well.
Chris