Help, my Kefir grains turned blue!

[Guest guest]

Hello! My Kefir grains were well and happily making good Kefir in

goat's milk, then one day after just one day, there was a bluish liquid

on the Kefir similar to a sourdough left in the refrigerator for several

days. Then when straining, the grains had turned blue ! (Picture at

http://www.bondocteur.com/bluegrains.jpg). The pasteurized goat milk was

nearing it's best before date and perhaps had begun turning bad. Do I

have to trow away these grains or can they be salvaged? I did not dare

drink this bluish Kefir, so I washed the grains in water and put them in

fresher milk. I was not too concerned about the milk being near it's

best before date because I had read that Kefir grains were quite

resistant to contamination. The grains had their milk faithfully

changed each and every day and the temperature always between 18 and 26

degrees Celsius, but most of the time 22. Thanks for any help. Luc

Chene