AD332B Fermaid O (120 g)

So, I'm a big fan of doing things as naturally as possible and jumped at the chance to buy a yeast nutrient that comes from an organic source. I've used this several times previously to buying this and there is at least a very small difference in flavour in some (not all) of my side by side brew tests that I've used this in. When I use Fermaid O, there is an apparent lack of sulphite smell/flavour compared to using DAP or Fermaid K even in primary fermentation. That, and the fact that I know it's a natural product will be enough to keep me buying it (though I hope to find a decent UK source in future). This replaces DAP, Fermaid K etc. TIP: get this out of the packet and into a jar with a silica gel pack in it as Fermaid O has an insane affinity for moisture and becomes very sticky, very quickly!

parfait

Fermaid O is supremely helpful if you brew stuff that isn't nutrient rich for yeast; I brew meads without much else in the recipe so the rather hostile atmosphere can cause a more stressed out yeast. Fermaid O improves the quality of my brew, and the value of that for the money is enough that I won't go without it. Pros: -The standard for organic yeast nutrition -Preferred over inorganic yeast nutrition -I feel it improves the taste and smell of what I ferment Cons: -People get riled up over using it or not Happy yeast make happy ferments; I keep my yeast happy by using Fermaid O.

Since starting to use a couple grams in each fermentation has been more consistent and less worry about stalling. Every batch gets this now.

Works as it should

Mead is a finicky fermenting drink. Honey and water is notoriously lacking in nutrients that are essential for yeast, including nitrogen and phosphate. As a results, yeast can become stress and output unpleasant flavors and fusel alcohols, which taste like you'd imagine jet fuel to taste like. Fermaid O seeks to remedy this by providing the proper nutrients for happy yeast. A few tips... 1) I add a few grams at yeast pitch into the must. This allows the yeast enough nutrition to get started. 2) For even fermenting and happy yeast, common recommendations are to have a "staggered" nutrient addition schedule. I like to add complementary nutrients -- diammonium phosphate (DAP) and Fermaid K -- at the 24, 48, and 72 hour mark. This, when paired with Fermaid O, allows for steady fermentation and a reduced likelihood of bad or "off" flavors. 3) Fermaid O is a little different than Fermaid K. It is an organic source of nutrients, rather than chemical. Overall, I think Fermaid O is necessary for making top-tier meads. I would recommend it for intermediate mead makers.