bernardsmith
Well-Known Member
Couple of points: most LHBS (local home brew stores) in the US sell potassium metbisulfite. Sodium Metabisulfite is essentially the same but I suppose for people who are on low sodium diets (high BP) then the K-meta is a better option BUT the active part is the META and not the K or the Na. The META is a sulfur product and it is the sulfur that is what we are looking for. A) the sulfur can kill less vigorous yeast cells and B) sulfur (at about 50 parts per million - or the equivalent of 1 campden tab per gallon is what inhibits oxidation.
Stabilization (using BOTH K- (or Na- ) Meta and sorbate is what you might add IF - IF you are back sweetening your wine or mead. Now, grape wines even when brut dry offer up a perception of sweetness but most country wines and mead may not AND if you are looking for a wine where the flavor of the fruit is right there (fruit forward as they say) then you may need to sweeten the wine after it has fully fermented. That might be 2 oz of sugar per gallon or 4 or even more depending on how sweet you want/need the wine to be. More: some fruit is very acidic and one way to balance the acidity is to add sweetness.
If you simply add sugar to the wine the yeast will treat that sugar in exactly the same way they treated the sugar on day -one. In other words, those yeast cells will work to ferment that sugar and your wine won't be a hair sweeter after you added the sugar though it will be more alcoholic. Stabilization prevents yeast from fermenting added sugar. BUT - and here's the thing: if you are not adding sugar there is no need to STABILIZE the wine. There is no reason to stabilize it... BUT that does not mean that you don't need to add K-meta (or Na- Meta). You add that to inhibit oxidation.
Stabilization (using BOTH K- (or Na- ) Meta and sorbate is what you might add IF - IF you are back sweetening your wine or mead. Now, grape wines even when brut dry offer up a perception of sweetness but most country wines and mead may not AND if you are looking for a wine where the flavor of the fruit is right there (fruit forward as they say) then you may need to sweeten the wine after it has fully fermented. That might be 2 oz of sugar per gallon or 4 or even more depending on how sweet you want/need the wine to be. More: some fruit is very acidic and one way to balance the acidity is to add sweetness.
If you simply add sugar to the wine the yeast will treat that sugar in exactly the same way they treated the sugar on day -one. In other words, those yeast cells will work to ferment that sugar and your wine won't be a hair sweeter after you added the sugar though it will be more alcoholic. Stabilization prevents yeast from fermenting added sugar. BUT - and here's the thing: if you are not adding sugar there is no need to STABILIZE the wine. There is no reason to stabilize it... BUT that does not mean that you don't need to add K-meta (or Na- Meta). You add that to inhibit oxidation.