Skimmed Cream Starting to Sour - What can I do with it?

[chilipepper]

I have a quart of cream that I skimmed off of my raw milk last weekend and I just have not been able to get to it this week.  Is it fertilizer or can I make something out of it?  I was going to make butter but I'm not sure If one wants to do that with souring cream?  It has a slight sour smell when you open the jar and very slight in taste... Any experience and guidance would be appreciated.

[Tea]

Cultured butter also have the sour taste, like sour cream.  Make it into butter, as it probably can not be cultured any further without it curdling.

[chilipepper]

Thanks Tea, it is not in the form of butter and tastes just fine....    Thanks! Ryan