Yeah, that's interesting. I always do it the same way as you, but I decided to do a quick analytical calculation. I wrote it up here: http://maxbrunsfeld.wordp

Yeah, that's interesting. I always do it the same way as you, but I decided to do a quick analytical calculation. I wrote it up here: http://maxbrunsfeld.wordpress.com/2011/02/17/on-the-mixing-of-milk-and-hot-coffee/ http://maxbrunsfeld.wordpress.com/2011/02/17/on-the-mixing-o... my result agrees with your intuition.