Originally Posted by Lushife
Thanks everyone. The reason I wanna boil in the flask is cause I'm worried about the wort getting contaminated while cooling or transferring.
If you use best practice procedures and properly sanitize then there should be no worries. This goes for the entire process as it is not the only time transfers will be involved in the brewing process.
Anything that comes in contact with your chilled wort or finished beer has the potential to infect the batch so now is the time to understand and master your cleaning and sanitizing procedures