Yeast Starters

[sadeghsafari100]

can i do it without boiling?

[caveroo]

I also wonder if the foil is needed during the boil. I usually put the foil on right after the boil. I'm sure it works either way.

[caveroo]

How do you keep it from boiling over in the flask?

I usually add some fermcap to my starter to reduce boil overs.