DetailsA larger size for larger batches of beer, or higher gravity beers. Sometimes you just need a big yeast starter for a big beer. The correct sized stopper is available in the related products section on the left. Currently this flask uses a 9.5 stopper. Do not apply direct heat to the flask.
- Details & Instructions
Height 10.5" Diameter 6.5"
4.4 / 5.033 ReviewsVERY STRONG!This flask I bought from Midwest is very strong. I accidentally knocked it off the top of my refrigerator while a yeast starter was inside of it. While it was a nightmare having 2000 ml of starter wort all over my kitchen floor, to my surprise this flask did not have a scratch on it after crashing to the hard floor from five feet! I would not suggest anybody replay this scenario to try to test this durability for themselves however.May 15, 2011I have two.I usually brew a 10 gallon batch and use 2 flasks for separate 5 gallon fermenters. This is nice because I can try 2 different yeasts on the same wort and compare which one I like better. _x000D__x000D_I also cook my starter directly in the flask on the stove and the glass handles going directly into an ice bath just fine. Throwing in the magnetic stir stick in (before heating) takes care of sanitizing the sticks._x000D__x000D_Be careful, cooking directly in the flask requires a great deal of attention. Don't use too much heat. It will easily boil over.September 6, 2011Exactly What I WantedI've made three starters with this flask so far._x000D__x000D_I have a gas stove, and heat the wort directly in the flask. I find it's easier to avoid boil overs if I leave the stir stick out while boiling. I take it straight from the burner to an ice water bath (that's no deeper than the wort level is high inside the flask).February 24, 2012Excellent quality!I've had a few yeast starters go "vesuvius" with the smaller 1000 ML flasks. The bigger 2000 ML works like a champ!May 8, 2012resistant to thermal shockGreat for making a starter quickly. Made from borosilicate glass. So you can move it from a boil on your hot plate into an ice water bath for rapid cooling, without the risk of Thermal shock.July 1, 2012GreatI love it that says it all, although I should let everyone know I do not actually put it on the burner. I cook my starter in a sauce pan & then pour into flask with a funnel..October 3, 2012A yeast starter must!I have both the 1000ML and 2000ML flask. The 1000ML I bought to make a yeast starter but soon found out that it was way too small and boil-overs were a unavoidable mess. After switching to a 2000ML flask boil-overs are less common (but may still occur). If you are going to invest in this for a yeast starter then you must also look into a stir plate. Good luck!October 20, 2012Yeast StartersThis flask is an essential if you are going to make yeast starters or wash yeast. Use the flask to measure your water when making starter wort. These work great when washing yeast as well because the narrow opening keeps trub and other nasties out of your yeast.November 7, 2012Good for growing yeastI boil my starter wort in this flask directly on the gas (kitchen) burner. A little Fermcap makes sure there is no boil over. It works great with my stirbar/stirplate combo. I've done probably a dozen or so starters with this flask, and it handles the heat shock just fine. However, the glass is a little thinner than if you got your hands on a real lab Kimax or Pyrex flask - but at this price it's a great deal.December 28, 2012Yeast Starter Must HavePerfect for making yeast starters around 1000 mL. Any larger and you will need to watch it very closely. The largest starter I've made so far was 1500 mL and it boiled over like a valcano (clogged up my turkey fryer). Fermcap could be solution for the boil over problem. You can put directly in ice for cooling and it won't break. I get a nice vortex with my DIY stirplate and a 1" stir bar.January 30, 2013
- Customer Q&A
Browse 2 questions Browse 2 questions and 4 answersCan you heat wort in it on the electric stove?BEST ANSWER: We do not recommend using them with an electric stove. Always a good idea to use it in a pot of water to heat it.What SIZE FOAM STOPPER DOES THIS FLASK USE?BEST ANSWER: I don't recommend foam stoppers. When you use the flask to grow yeast, foam stoppers tend to prevent the introduction of air which is very important. Instead use a sterilized aluminum foil square.