I am looking to use a neutral wash recipe similar to that developed by Wineo, but here in New Zealand, DAP seems difficult to come by unless you want to purchase in bulk 40kg+ bags. Certainly I could use alternative fertilisers, but the trouble seems to be that they all contain urea. The combination of alcohol and urea supposedly forms Ethyl Carbamate when heated, and Ethyl Carbamate is known to be cancer causing. While we can probably debate the claim, or debate the amount produced, the fact is that my partners family has a history of cancer, and therefore we take such things seriously and wouldn't even want to be taking any kind of chance.
But anyway, what I am ultimately trying to ask, is whether anyone has tried to use more 'organic' means of supplying yeasts with nutrients. For example, seaweed, fish or blood and bone fertilisers? (perhaps some of which may also contain traces of urea? - I don't know yet). Tomato paste seems to be a favourite amongst some, but there is talk of the final product containing impurities that need to be removed. These 'organic' fertilisers tend to be pungent, and I am concerned that flavours and odours may result in the final product.
Yeast nutrient options
Moderator: Site Moderator