Boiling in a flask? - Home Brew Forums
Home Brew Forums > Home Brewing Beer > Fermentation & Yeast > Boiling in a flask?

Reply
 
Thread Tools
Old 06-25-2013, 01:51 PM   #1
LovesIPA
Recipes 
 
May 2012
Sacramento, CA
Posts: 1,521
Liked 204 Times on 153 Posts



Every starter I've made I've boiled in the flask. I have an electric coil stovetop and everything I've read said this is a no-no. Sooner or later, the flask will break. I haven't had any problems yet, but I'd like to avoid any possibility of spilling a liter of hot sticky wort all over my stovetop (and floor, and cabinets...)

So how do other people do this? I really like the convenience and simplicity of boiling right in the flask, plus it makes it easier to chill. I thought about getting a small gas burner, but what about a fuel source? Ventilation issues? What about an electric hotplate? Will it boil 2 liters of water without taking forever?

Thanks!

 
Reply With Quote
Old 06-25-2013, 02:30 PM   #2
Bensiff
Recipes 
 
Mar 2008
, Washington, the state
Posts: 4,883
Liked 382 Times on 301 Posts


I have always heard that the direct contact with coils are a no-no as well, I would think a hot plate would be the same. Perhaps a small camping/packing stove running off white fuel or propane would work, just do it outside. Or you could boil the water in a stainless pan and then transfer it to a sanitized flask.

 
Reply With Quote
Old 06-25-2013, 03:04 PM   #3
sieglere
Recipes 
 
Jun 2012
Posts: 180
Liked 12 Times on 12 Posts


They make chemistry hot plates and flasks for heating. If you have a Pyrex (or similar) flask a hot plate should be fine. If you really want to splurge, get a hot/stirplate combo

Personally, not owning one, I boil in a small pot and pour into the flask

 
Reply With Quote
Old 06-25-2013, 03:39 PM   #4
hunter_la5
Sheriff Underscore
HBT_SUPPORTER.png
 
hunter_la5's Avatar
Recipes 
 
Jul 2012
New Braunfels, Texas
Posts: 12,717
Liked 5737 Times on 3285 Posts


Quote:
Originally Posted by LovesIPA View Post
Every starter I've made I've boiled in the flask. I have an electric coil stovetop and everything I've read said this is a no-no. Sooner or later, the flask will break....
The very first time I tried to boil a starter flask directly on an electric coil stovetop, it cracked the glass. There was no glass-shard explosions and no huge boiling mess, but it pretty much rendered the flask useless after that. I had seen people boiling starter flasks on gas ranges, and wasn't aware that electric coils were different.

Now I've reverted back to my original method of boiling my starters in a small saucepan, chilling, and then funneling it into the flask.
__________________
:taco:

 
Reply With Quote
Old 06-25-2013, 03:43 PM   #5
funnycreature
Beer Crafter, Metalhead \m/
HBT_LIFETIMESUPPORTER.png
 
funnycreature's Avatar
Recipes 
 
Mar 2013
New House, WV
Posts: 1,049
Liked 190 Times on 161 Posts


Quote:
Originally Posted by hunter_la5 View Post
Now I've reverted back to my original method of boiling my starters in a small saucepan, chilling, and then funneling it into the flask.
That! But sometimes I simply take my stuff to work and autoclave it
__________________
Brütal Brews - Infüsing Craft Beer with Metal since 2013

Check out my wife's etsy store where she offers soaps made with my beer!

 
Reply With Quote
Old 06-25-2013, 03:44 PM   #6
Cbaddad
Recipes 
 
May 2011
Carlsbad, CA
Posts: 571
Liked 110 Times on 78 Posts


I would buy a small camping/backpacking propane stove. You could still use it on your kitchen counter and it would work with your flask.

 
Reply With Quote
Old 06-25-2013, 03:52 PM   #7
BigRedHopHead
Recipes 
 
Feb 2012
Omaha, NE
Posts: 290
Liked 20 Times on 19 Posts


I tried this method my first few times too and got worried like you did. I now use a pot to make the starter wort and a funnel to pour it into the flask for cooling and to sit on the stir plate. works fine, sanitation has never been an issue. I spray the crap out of the flask and funnel with Star San. Easier to control the foam when dropping the DME into the water in a pot than in the flask.
__________________
Beer is the answer....but I can't remember the question.

 
Reply With Quote
Old 06-25-2013, 05:33 PM   #8
eastoak
Recipes 
 
Jan 2011
oakland, california
Posts: 3,294
Liked 159 Times on 149 Posts


those electric coils would heat the class unevenly and cause it to crack. i boil in my flask all the time but it's a gas stove.

 
Reply With Quote
Old 06-25-2013, 05:38 PM   #9
Irbefan
Recipes 
 
Mar 2011
Aurora, CO
Posts: 67
Liked 12 Times on 10 Posts


I do a double boil. Put the flask in a pot with boiling water. I don't know if this is a bad way to do it, but it works.

Seahare Likes This 
Reply With Quote
Old 06-25-2013, 08:36 PM   #10
Beernoulli
Recipes 
 
Aug 2012
Dallas, Texas
Posts: 40
Liked 3 Times on 3 Posts


I just noticed mine has a crack recently too. I emailed AHS to ask, and they advocated against any sort of direct heating. Basically using it just as a fermenter rather than a fermenter/pot combo like I had been.

I had a homebrewing friend recommend using a comal (thick piece of metal tortillas are made on) to distribute the heat. Or a double boiler, but if the flask sits on the bottom of the pot it's pointless.

 
Reply With Quote


Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Boiling wort for starter right in the flask azingsheim Fermentation & Yeast 32 08-19-2010 01:26 AM
Boiling in Flask? jalgayer Fermentation & Yeast 19 04-30-2010 07:50 PM
boiling starter in erlenmeyer flask? Tmeister Fermentation & Yeast 6 11-23-2009 11:16 PM
Boiling starter in a non pyrex flask Elfmaze General Techniques 1 10-11-2009 11:06 PM
will boiling starter wort directly in Erlenmeyer flask sanitize the flask? jigidyjim Beginners Beer Brewing Forum 12 08-21-2009 02:05 PM


Forum Jump