What to do with failed yogurt?

[furbabymom]

I made a batch of yogurt overnight and only half of it thickened (my yogurt maker uses individual cups). Does anyone know if it's safe to just hang on to the runny stuff and use it as, say, sour milk in recipes? It's organic whole milk - I'd rather not just dump it down the drain!

[Canned Nerd]

I would keep it going in the maker for another few hours to give the culture more time to multiple.

 

[furbabymom]

I'll try that. It was already in there 10 1/2 hours, so I figured that was it. But I'll give it a shot!

[Staceyy]

I use mine in any recipe calling for milk.

[Ambergris]

If it's rotten, you'll know.