cider vinegar

[EdS]

Bought some farm made cider the other day - unfortunately we left it in the car and now it has started to turn.

So anyone know how to make half decent cider vinegar?

 

[bushwacker bob]

Sounds like you've already done it.

 

[British Red]

Ed, yes but acidity is the key. Normal vinegar is about 5% - much more than that and it will become unpalatable. If the cider is turning to vinegar you have two things

1) a valuable resource (mother of vinegar)
2) an ability to make something more valuable than the cider

Is a sort of "scum" forming on the top?

To check strength I can teach you to titrate the vinegar with a red cabbage and an eye dropper if you like?

Red