Step 7: Cooling the Wort
Sanitation is very important in brewing. Anything that comes in contact with your cooled wort must be sanitized else you run the risk of undesireable critters living and multiplying in the wort only to contribute nasty unintended flavors in your beer. You've sanitized your strainer in the boil, right? Your fermentation bottle is sanitary because you just opened it and capped it after using water from it, right? Your funnel and anything else to come in contact with the wort can be sanitized by soaking in a solution of 1 tablespoon of bleach per gallon of water for 30 minutes.