Tuesday, April 24, 2007

With the re-release of Wyeast's Roeselare Blend

With the re-release of Wyeast's Roeselare Blend (for 3 months as part of the summer VSS releases) I though I would post my only experience with it (even though I have yet to taste the beer).


Roeselare Blend is supposed to be an approximation of the yeast/bacteria mix that Rodenbach uses on their beers (the same blend was at one point provided to such small brewers as De Dolle). It is supposed to give a solid acidity and interesting flavors without being as pungent as the lambic blend.

I haven't found the actual strains in the blend, but there is Brett (probably lambicus) and lactic acid bacteria (most likely Lactobacillus and not Pediococcus). There is also regular old Saccharomyces (California Ale yeast according to some people), but I thought it was a good idea to pitch my own primary yeast so I would not be under pitching (I figured with all that bacteria/Brett in the smack-pack the yeast would at a low count and stressed).
For more info on the the piece of oak jammed into the top of the carboy check out this.


RodenTons

Recipe Specifics
----------------
Batch Size (Gal): 6.00
Total Grain (Lbs): 12.31
Anticipated OG: 1.062
Anticipated SRM: 12.9
Anticipated IBU: 13.0
Brewhouse Efficiency: 83 %
Wort Boil Time: 100 Minutes

Grain
------
4.00 lbs. Belgian Pilsener
3.00 lbs. American Vienna Malt
3.00 lbs. Belgian Munich Malt
1.00 lbs. Wheat Malt
0.44 lbs. CaraMunich Malt
0.44 lbs. Aromatic Malt
0.44 lbs. Special B Malt

Hops
-----
1.75 oz. Whole Czech Saaz @ 90 min

Yeast
-------
Primary White Labs WLP530 Abbey Ale
Secondary Wyeast 3763 Roeselare Blend

Water Profile
-------------
Profile: Wayland
Profile known for:

Calcium(Ca): 31.0 ppm
Magnesium(Mg): 6.2 ppm
Sodium(Na): 20.0 ppm
Sulfate(SO4): 36.0 ppm
Chloride(Cl): 25.0 ppm
biCarbonate(HCO3): 61.5 ppm

pH: 7.00

Mash:
--------------
Sacc Rest 40 min @ 147. 0.85 qrt/lb
Sacc II 30 min @ 162. 1.18 qrt/lb

Notes
-----
Based on a Flanders Red from Jamil

Brewed 8/9/06 by myself

First rest temp a few degrees higher than intended. Fly sparge, with great efficiency 6.75 gallons of 1.058 runoff collected. 2 year old hops 3.3 AA listed, adjusted down to 2.5 AA. 1/2 tsp yeast nutrient added with 15 minutes left in boil. Boil off went faster than expected so I ended it 20 minutes ahead of schedule, next time collect more wort. Pitched washed cake of 530 pitched from dubbel sugar experiment when wort was chilled to 69. Put into fridge at 62. Nice thick krausen by the next morning, so I dropped the temp to 60 to lower ester production and limit attenuation. The next day the blow-off had overflowed, so I dropped the temp to 58 to slow production.

8/14/06 Gravity down to 1.038 (49% AA), higher than I expected. Sweet and fruity flavor. Temp raised to 65 to see if I can wake the yeast back up a little bit.

8/19/06 temp dropped to 60 to get yeast out of suspension before racking.

8/20/06 1.026 (new hydro adjusted down .004 due to cold water reading) Still a bit of crap in suspension, but I racked anyway. Topped up with 1 gallon of filtered water and put into 5 gallon glass carboy with smacked (but not swollen) Roeselare blend and topped with the oak chair leg, toasted and soaked/boiled, hopefully this will transfer oxygen into carboy, let co2 out and impart flavor I cooked it at 300 for 30 minutes to sanitize and then wrapped with Teflon tape and tapped into place with a rubber auto mechanic mallet. It took a few tries to get the wood in tight enough to stop foam from escaping around it, but eventually foam was coming out the top of the wood. Wood approximately 13 sq in of surface area contact, .5 oz oak beans has 16 sq in contact. Fridge adjusted to 64 degrees for long aging.

10/29/06 I managed to crack the neck of the carboy while putting the wooden peg back into the carboy. The damage was minimal so I just the neck back together.

12/24/06 Looks pretty good, crack hasn't developed and the beer still looks good. After a prolonged secondary I plan to add sour cherries to 2 gallons, dry hop 1 gallon with Amarillo/Cascades like New Belgium's Le Terroir, and leave 2 gallons straight.

8/05/07 Planning on bottling some of this next week. I bought 4 lbs of blackberries today and put them in the freezer, planning on adding most of them to half of this beer.

8/12/07 bottled 2.5 gallons aiming for 2.2 volumes of CO2.  The other half was racked onto the 4 lbs of blackberries for extended aging.  The sourness seems a bit tame at this point.

9/13/07 The carbonation increases the perception of sourness, this is turning into a really solid beer. 

12/29/07 Bottled the blackberry half with 1/3 cup of table sugar.  

9 comments:

The Mad Fermentationist said...

Just took a small sample of this one when I was back in MA a few weeks ago. It is coming along beautifully, it is a nice and clear amber-red with a mild lactic sourness and caramel backbone, little to no funkiness or acetic acid at this point.

To boost the acidity I took it out of the 65 degree fridge and left it at ambient temps, hopefully the warm summer temps will kick the bacteria into gear.

I plan to bottle some and add fruit and dry hops to different portions in August.

Andrei said...

Mike, what did you use the slurry from this beer (and the other Flanders Red) for?

The Mad Fermentationist (Mike) said...

I don't think I did anything with the slurry from this one. The other one was a starter for a wine barrel of Flanders Red, so the cake went into the barrel.

Andrei said...

Can the Flanders Red slurry be used for fermenting other styles, like Wee Heavy or RIS?

The Mad Fermentationist (Mike) said...

You could certainly ferment any sort of wort with a mixed slurry, but it wouldn't end up anything like the base beer. I've done sours based on saisons, wheat beers, Scottish, stouts, brown ales etc... pretty much any base beer can make a good funky/tart beer. Although I'd avoid really hoppy beers.

Jdubrx said...

When you rack onto the blackberrys how do you prepare the berrys? I am thinking of adding berrys to a sour (I really want to in fact) but I am unsure how I would filter the seeds for berrys. Any tips?

The Mad Fermentationist (Mike) said...

I find the easiest way to deal with berries is to freeze them first. The ice crystals rupture cell walls and allow easy access for the yeast and bacteria. When you are ready to put the beer onto the fruit, put the fruit into a sanitized carboy, allow it to defrost, then rack the beer onto it. I've never had issues with seeds, they stay in the fruit pretty well, puree is much tougher to deal with.

Good luck!

sweetcell said...

the mad fermentationist wrote:

"I haven't found the actual strains in the blend, but there is Brett (probably lambicus) and lactic acid bacteria (most likely Lactobacillus and not Pediococcus). There is also regular old Saccharomyces (California Ale yeast according to some people),"

according to http://www.wyeastlab.com/rw_yeaststrain_detail.cfm?ID=194, "Specific proportions of a Belgian style ale strain, a sherry strain, two Brettanomyces strains, a Lactobacillus culture, and a Pediococcus culture produce the desirable flavor components of these beers as they are brewed in West Flanders. Propagation of this culture is not recommended and will result in a change of the proportions of the individual components."

apologies for waking the zombie...

The Mad Fermentationist (Mike) said...

Thankfully, yes they've give a more complete look at the strains in the blend since I did this post (nearly six years ago). Still doesn't say specifically which Brett strains (their B and L I'd guess).

Down to my last bottle of the plain, sorry to see it go sometime soon.

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