As a bit of side note, I had a chat on Facebook recently with Phil, the kind gent with whom I collaborated with for the EverLong IPS (still have a few bottles left). Our discussion centered around requirements for boil times, as I'd been doing some reading recently and wasn't sure I was fully understanding everything I was reading. The end result is that I did (understand, that is), and I'll be making a move to shorter boil times. As I'm not trying to get a lot of bitterness from the hops (even when I brewing an IPA), and using DME, I don't need to worry so much about having to boil off dimethyl sulfide (DMS).
Okay, so back to the sour beers. I reached out to Jake (of Crooked Run Brewing), who has been producing some fantastic sour beers. I had his gose a bit ago, and not only enjoyed the flavor, but enjoyed the conversation with my wife as she marveled at a "0 IBU" beer. Recently, I enjoyed the Nepotism, a sour beer made with peaches that was quite delicious and very enjoyable (I also enjoyed the peach-habanero IPA, as well...).
From the good folks at Crooked Run Brewing:
I would recommend using Goodbelly probiotic drink, available at Whole Foods and Wegmans. You don’t need to make a starter on that scale, just use one or two shots of Goodbelly. It contains pure lactobacillus plantarum. It works best at 85-95 degrees. You should achieve a PH of between 3.2-3.4 in 48 hours. We typically get to our target PH in less than 24 hours.
According to GoodBelly, I can get the StraightShot product (unflavored) at a local WholeFoods. I visited the Whole Foods in Fairfax recently, and while they had a number of GoodBelly SuperShots in different flavors, they didn't have any unflavored. According to one source on the Milk The Funk wiki, the mango flavor might turn out okay. However, I made a trip to Leesburg and stopped at the WholeFoods in Ashburn, and found the StraightShot product, and purchased a couple of 4-packs (they were on sale).
Okay, so as a small batch brewer, I'm thinking, how do I get the temperature up and maintain it consistently over, say, 2 days? Well, Northern Brewer has a good option for a heating mat.
Brew Day: 19 Sept 2016
Earlier in the day, set out (2) GoodBelly StraightShot shots to reach room temperature, and start the heating mat warming.
14 oz white wheat
2 oz flaked wheat
Boil (20 min):
1 lb Pilsen DME
After the boil is complete, cool the wort to approx: 100 deg F (it will cool further during transfer). Transfer the wort to a sanitized fermenter, leaving room for the bacteria. Add (2) StraightShot shots, transfer to heating mat. Let the wort remain on the heating mat (monitoring regularly) for 48 hrs.
Phase 2, 22 Sept:
This is actually kicking off a bit later than I would have liked. I wanted to move on to this phase after just 48 hrs, but due to scheduling, it got pushed off to today. Something I did notice that I wanted to document is that after sitting on the heating mat, the particulates in the wort settled considerably, and the wort was actually pretty clear. However, agitation in transport, as well as returning the wort to the brew kettle disturbed some of that particulate matter. I'm sure that it will settle out again, though.
I took the wort off of the heating mat, and into the kitchen. As I poured the wort out of the fermenter into the kettle, I noticed that it smelled like warm apple juice...that's the best description I could come up with. As I was heating the wort to boiling, I noticed that it continued to smell the same way.
I boiled the wort for 20 min, adding 4 g of Glacier hops (AA: 5%) halfway through the boil.
Once the boil was complete, I cooled the wort and pitch the yeast (Safale US-05) as per usual.
Addendum, 5 Oct: Bottled today with 1 oz table sugar dissolved in 1/2 c. boiling water. Got two 22 oz bottles and 7 regular bottles. Tasted the beer before adding it to the priming sugar, got some sour!
Addendum, 18 Oct: Chilled and tried one tonight. Wow! Pours with a light yellow/straw color, a bit hazy as you'd expect from the wheat malt. Almost no head, but decent carbonation. Very minimal lacing. The important thing is that the flavor is definitely sour, not funky or cheesy. Good body, light, drinkable beer. Definitely a success for a first run at a sour beer, many thanks to Jake at Crooked Run for the tips.