Temperature for adding yeast? - Home Brew Forums
Register Now For Free!

Home Brew Forums > Home Brewing Beer > Beginners Beer Brewing Forum > Temperature for adding yeast?

Thread Tools
Old 12-09-2010, 05:18 PM   #1
Nov 2010
Mechanicsburg, PA
Posts: 176

Ok so my yeast says on the vial, fermentation will start 5-15 hours after its pitched. NOw it also says to add the yeast when the wort is between 70-75 degree F. But the recipe says to store at 65 degrees F. My question is should i let it sit under 70-75 degrees say overnight and then switch the temp to 65 degrees for the rest of fermentation???? thanks

Reply With Quote
Old 12-09-2010, 05:28 PM   #2
Captain Damage
Captain Damage's Avatar
Apr 2008
Lowell, Massachusetts
Posts: 1,230
Liked 83 Times on 71 Posts

Don't sweat it too much. But if you have the ability to store at 65F, just bring your wort temp down to 70F, pitch your yeast and put your fermenter in your 65F room and leave it. It will take a lot longer than you think to drop from 70 to 65. That said, most homebrew experts recommend pitching ales at the fermentation temperature.

Reply With Quote
Old 12-09-2010, 05:34 PM   #3
Nov 2010
Beach, VA
Posts: 651
Liked 7 Times on 6 Posts

ale yeast i more active at 75 degrees than 60 degrees, but it will produce more bad flavors (esters) at the higher temp.

many people pitch their yeast at 70 to 73 degrees, then as soon as they see yeast activity (bubbling or a layer of yeast at the top of the wort) they will drop the temperature to 60 or 65 degrees to prolong fermentation and reduce ester production.

during the winter, i try to drop my temperature and keep the bubbles in my air lock or blowoff tube spaced out 10 to 30 seconds apart, and leave it in the primary for 3 or 4 weeks.

Reply With Quote
Old 12-09-2010, 05:34 PM   #4
Nov 2009
Asheville, NC
Posts: 2,827
Liked 48 Times on 41 Posts

In a perfect world you'd pitch below fermentation temp and let the heat from the yeast activity bring it up to the fermentation temp. Then use cooling to keep it from going above the desired temp. As the fermentation activity slows the yeast will stop producing heat. At that point you could use heating to keep the temp at the fermentation temp or just slightly above.

Start cool to control off flavors

Finish warm to let the yeast clean up the beer and for full attenuation

Temp control is a HUGE factor in making great beer.

Reply With Quote
Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
Temperature for S-23 yeast Varroa Beginners Beer Brewing Forum 3 11-21-2010 10:20 PM
Yeast temperature ftrombley Beginners Beer Brewing Forum 5 08-31-2009 02:48 PM
Yeast Temperature BrewFrisco Beginners Beer Brewing Forum 7 08-21-2009 05:44 AM
Yeast & Temperature Mark Duddridge Beginners Beer Brewing Forum 5 03-27-2006 08:20 PM
yeast temperature eyekaps Beginners Beer Brewing Forum 2 05-06-2005 07:21 AM

Forum Jump