Singletrack
Because it's judgement that defeats us.
I used fermcap in the boil of my yeast starter. It came to a boil with no suggestion of boil-over. Great! Then, I added about a quarter cup of water with dissolved yeast nutrient. Big mistake. As soon as the water hit the boiling wort, I had an immediate boil-over. Just a warning to others, add the nutrient before it boils.
