I bought more distilled water than I needed for something and I was thinking of brewing a beer with it. What should I be aware of besides adding salts?
It works really well with light beers, brewing salts are an obvious addition, but it works with everything from American Lager to a West Coast IPA. Most of my beers are a combination of RO and distilled water, it works with most beers that don't have too much color.
I may be late to the party here, but maybe brew a lager, or Pilsner, to my knowledge they typically use a "softer" water profile. I recall adding very little to RO water when I brewed the Shady Bohemian.