I boil it in the flask on an electric stove. If its a good flask, it should be no problem.
If its boiled in the flask, I am SURE its sanitized.
Before that, I sanitized a one gallon jug. I boiled the wort, cooled it some and poured it into the jug. Both work, but boiling it in the flask gives me that warm fuzzy feeling.
Yellow beer (pale ale) in keg
Chocolate stout In keg
Front Porch Porter in keg
weat beer and fruit in the conical
IPA of some kind on Deck!
I get more out of it when I put more into it. :)