Does anyone have experience with goat milk kefir?

In trying to make kefir with goat milk, I get a thick scum on the top. Is this normal or am I just making sour milk? Is it possibly the grains I am using, which don’t seem to separate into individual grains. If you are willing to talk about it, could you please email me your telephone number and I will call you,

Thank you,

Jean: .

City: Cuenca
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