After trying it myself to make sure it was cold enough and heating a sauce pan of water to boiling I enlisted Bob's help. I filled two thermos travel cups and out we went. Figured I had 2 chances to get the shot but Bob was willing to try it 5 times. Didn't really get the shot in my mind but we had both had enough of the cold and wind. It did freeze as soon as it hit the air. I hope to try again.