The Impact of Rainwater on Brewing

I think the big takeaway from all of that is that there are a lot of things that impact foam. It's not just one thing. So it really is just going to come down to you trying different things in your process too. Jake Swinson: Would you ever consider using rainwater for brewing? We have several rain barrels that collect tons of chlorine-free water after a storm. I would make up a one gallon batch and see how it turns out.