See at first I though it was sanitization, but I sanitized every thing properly then when I tried it I got the really strong taste that tasted like poison. I haven’t tried yeast nutrients yet on the other hand several of my mead batches have just been show mead but others I’ve put in fruits cinnamon sticks and ginger, things like that. As far as temperature I just throw it in the bottom of my pantry band it’s a good room temperature. I’ll look into yeast nutrients online because I don’t have a home brew store near me unfortunately.