Add 4 ounces of denatured alcohol to 1 ounce of wine in a test jar and look for stringy clots to form, indicating there is long chain pectin left. 1 teaspoon of pectin enzyme in 6 gallons should clear this up in the finished wine.

What do you use to clarify wine?

Isinglass is a preparation of the protein collagen and is primarily used for clarifying white wines. It gives a brilliantly clear wine and has a less dramatic effect on the astringency and body of the wine compared to gelatine.

How do you clarify cloudy wine?

You can clear your wine quickly with bentonite, or some other fining agent from a local homebrew store or online. Follow the manufacturer's instructions to add the bentonite to your wine. Bentonite removes negatively-charged participles and drops them to the bottom, allowing you to rack your wine off the sediment.