« on: August 06, 2015, 06:55:03 AM »
In which case, you might as well just add DME straight to the water at room temp and save the time and money. That's what I typically do and it works fine for me.Is that common?
I don't think so, but the way I look at it, my tap water is sanitary enough for consumption and DME is so hygroscopic that nothing is going to be able to grow in it. For brewing, we're just creating sanitary conditions, not sterile ones. If you are using otherwise solid sanitation practices (such as proper cleaning and sanitization of anything that touches the wort), then you aren't likely to introduce a significant amount of contamination by skipping the boil in a starter.
When I'm dealing with old, unhealthy yeast or low cell counts (such as growing up bottle dregs), then I will boil my starter wort. In those cases a small amount of contamination could quickly outcompete the culture you are trying to grow.