I’ve been listening to the Brewing Network’s Jamil Show and Sunday Session, and I recently decided to start making notes because the information is so good. This is just what I found noteworthy. There’s other good info provided in the show. If you’re a homebrewer and haven’t listened to the shows yet, they are extremely educational.
This is from the 6/18/06 or so Jamil Show.
- White Labs propogates yeast in the mid-70s.
- A hybrid ferments with lager yeast at ale temperatures or ale yeast at very cool temperatures and lagered.
- For a classic kolsch, you can use 100% pilsner malt.
- But it is nice to add 10% wheat for breadiness (or 5% wheat and 5% munich or vienna)
- If you can chill fast to prevent DMS, then keep your boil down to 60 minutes to prevent melanoidin development and color darkening
- But normally 90 minute boil because of using alot of Pils causes DMS risk
- mash at 149 (148-150) to end up crisp
- JT really likes BrewTec CL 450, but can use Wyeast 2565 or WLP029 (all 3 are very different yeasts)
- Kolsch yeast is great for American Wheat Beer
- Pitch at 60F and don’t let it warm beyond 62F
- underpitching and fermenting warm increases esters
- ferment a little longer than a standard ale but not as long as a lager
- if start warm, diacetyl rest necessary, if start cool diacetyl rest not necessary (I don’t get this)
- Let it FULLY finish. Be sure. If you cool to soon, you may end up with diacetyl, acedealdehyde (sp?), other off-flavors
- 10 days in Primary
- Cool to 33F (1 to 2 months; 1 month ok)
- may benefit from filtering, one of the few styles where it is ok
- 2.5V carbonation
- Alot of lagers done with a slow low ferment (need a big pitch of healthy yeast for this) are very good right out of primary
- Munich Helles is a good example (ok right out of the primary)
- Kolsch is the same way except the yeast does not floc well so it needs another month for the yeast to drop
- Bo Pils and Czech Pils are stunning a month of 2 out but turn bad at around 6 months (most pale lagers are that way) vs. beers such as RIS and Robust Porter that can be good at 1, 2, 3 years.