I am making a 2 liter starter on Sat and I am using a 2 liter flask. I want to boil the wort directly in the flask but I don't want a boil over. Can I boil enough DME to make a 2 liter starter in 1 liter if water and then top up with water to 2 liters after boil? and If I can, should I top off right after boil or after cooling? Thanks.