After giving up on brewing for a while, I've decided to have another go at it. Last time I brewed it didn't taste right and I think it was due to me using the wrong utensils. I brewed the tea in a stainless steel pot, fermented the batch in a glass vessel, and used stainless steel to help transfer from the vessel into glass bottles. I know that glass is the best to use, but how safe is stainless? Any suggestions on what utensils I should be using?