This could be something like isinglass or Kitosol 40 kieselsol and chitosan.

Isinglass mead. Once a mead is nice and clear filtration can be used to help stabilize it for bottling and to add an extra luster. The pad has to have a filtration value below the size of the yeast which are quite small around 1 micron. It is known for its gentle touch and is not recommended for removing any heavy hazing in your mead.

When fining agents are added mead should become more limpid and all the stuff in suspension should become part of the lees sediments. It is a form of collagen used mainly for the clarification or fining of beer. It is most effective in clarifying white.

So because I had it I used some powdered isinglass never used it before and from the moment I added it I knew I had not mixed it right. Now take a 12 teaspoon of yeast nutrient and a 12 teaspoon of yeast energizer and place it in the carboy. You can buy treated isinglass powders that simply dissolve in water.

Instructions for 1 gallon were just - mix half a packet with half a cup of must and wait 15 minutes mix thoroughly and add. Pull out about 1 cup of your must in a two cup measure and pour your yeast pack in and stir gently. Personally I prefer to avoid using some of these fining agents because customers might have sensitivities or allergies to them fish shelfish.

Metheglin is a flavored mead. It may be still carbonated or naturally sparkling. Mead goes by a couple of different names such as Mead Honey Wine Ambrosia and Nectar of the gods.

When brewing beer typically Irish moss is added to the boil in order to pull out the protiens and drag them to the bottom. Mangrove Jacks 1 Litre Isinglass bottle is sufficient for 250 Litres of beer or wine. My understanding of Isinglass is that it is used not as a flavoring but instead is used to remove cloudiness from wine and beer.