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Monday, November 27, 2017

New England Pale Ale: Brewing Video

NEIPA has a well-deserved reputation for short shelf-stability. I've heard homebrewers refer to it as intentionally poorly brewed... but that's like saying a souffle is poorly baked because it sinks minutes after you remove it from the oven. If there was a way to achieve a beer with the same juicy hop flavor and pillowy body plus long shelf life I wouldn't complain!

Finished chit malt NE Pale AleThere are brewers like John Kimmach, who says Heady Topper is at it's best at 10 weeks old. I've heard brewers from three or four other breweries advocate holding onto their hazy IPAs (especially the double-dry hopped sorts) for a month or two. Not exactly cellaring potential, but better than the versions that fall apart after a couple weeks.

Cold storage and minimizing oxidation both improve stability, but what else can we do to extend the life of hazy IPAs? Wheat and even more so oats contain higher concentration of manganese than barley malt. Manganese can catalyze oxidative reactions as well as increase protein solubilization. However, I don't think you can drop wheat and oats from a NEIPA without replacing the extra protein contribution, which adds body and head retention (not to mention haze).

To replace the protein usually imparted by flaked grains, Scott bought a sack of Best Chit Malt and shared a few pounds with me. Chit is essentially the Reinheitsgebot-approved replacement for unmalted barley. It is under-modified, retaining a range of long-chain proteins. Theoretically these proteins could fill the same role as the oats/wheat, enhancing foam and mouthfeel but without the associated drawback to stability. For the first try, I used chit at about the same rate I would flaked oats, 20%.

For hot-side hops, I went for a budget option as I did in my previous batch. For that last batch I used Chinook and Nugget to provide linalool and geraniol. For this batch I used Columbus and Simcoe. Columbus makes up a large portion of the kettle hops for many of Trillium's fantastic IPAs, providing a nice dank base-note to balance the fruity hops added on the cold-side. I added the Simcoe to the boil because the 3MH it contributes increases during the boil (while catty 4MMP decreases). Certain yeast strains have the ability to converts 3MH (grapefruit and passion fruit) to 3MHA (similar flavors with a lower threshold). Something we'll be playing with at Sapwood Cellars!

Rather than talk about the brewing process for the 200th time, I took videos of the key points in the process and posted them to my YouTube channel with my descriptions, plus a version without a voice-over. Enjoy! I'm hoping to do more of this, especially as the brewery gets up and running and I have more interesting action to record!



Good Chit NEIPA

Smell – Pleasant mixture of tropical and lightly dank. As always I appreciate a balance rather than the “straight juice” aromatics of some examples. If I want a fruit beer, I’ll drink a fruit beer! The volume could be turned up, despite the heavy hot-side, fermentor, and keg hopping it doesn’t leap out of the glass like my favorite batches. A result of the yeast or something else? Clearly it isn't malt aromatics in the way.

Appearance – It isn’t clear, but it certainly looks more like an unfiltered West Coast IPA than a standard NEIPA. I don’t brew for appearance, but there certainly is some eye-palate interaction that it doesn’t fit. There are some suggestions that above a certain point more proteins (especially large proteins) are likely to coagulate and drop from suspension. It was hazier the first few weeks, but it cleared up in the keg.

Taste – Crisp, missing the malt sweetness to support the fruity volatiles. The saturated hop flavor is nice, again walking that line between fruity (grapefruit and passion fruit) and dank. Malt is subdued, could use a boost from a portion of English malt or crystal malt. A friend commented that it has a zwickelbier-like maltiness, hard to argue with it being more subdued than most.

Mouthfeel – While the head lasts it is thick and luxurious. It really adds creaminess to the body. While retention started off lackluster for the first couple weeks, it really came into its own. Although after the head fades the body is lackluster. Thin, crisp, just a hint of tannins in the finish. The screen did a good job keeping the powder burn to a minimum.

Drinkability & Notes – It is a unique interpretation of the style. Somewhere between the crispness and cleanness of a Russian River IPA, and the fruity-tropical hop character of NEIPAs. While I don’t want sugary, I think the style benefits from a little perceived sweetness. Drinking this seven weeks after brewing I have to say that it did hold up better than my typical oat-heavy NEIPAs!

Changes for Next Time – A little iso-hop extract might add the longevity the head needs. In exchange I’d move the 10-minute addition later or slightly cool before adding the whirlpool addition. Maybe a small dose of light crystal malt to add sweetness?

Recipe

Batch Size: 11.00 gal
SRM: 3.8
IBU: 62
OG: 1.055
FG: 1.012
ABV: 5.6%
Final pH: 4.65
Brewhouse Efficiency: 68%
Boil Time: 75 Mins

Fermentables
----------------
80.0% - 20.0 lbs Rahr 2-row Brewer's Malt
20.0% - 5.0 lbs Best Chit Malt

Mash
-------
Mash In - 60 min @ 156F

Hops
-------
2.00 oz Simcoe (Pellets, 13.00% AA) @ 10 min
6.00 oz Columbus (Whole, 15.00% AA)  @ 30 min Whirlpool
2.00 oz Simcoe (Pellets, 13.00% AA) @ 30 min Whirlpool
4.00 oz Mosaic (Pellets, 12.25% AA)  @ Dry Hop Day 2
4.00 oz Simcoe (Pellets, 13.00% AA) @ Dry Hop Day 2
2.00 oz Citra (Pellets, 13.00% AA) @ Dry Hop Day 2
2.00 oz Simcoe (Cryo, 26.00%) @ Keg Hop
1.50 oz Citra (Cryo, 24.00%) @ Keg Hop
1.50 oz Mosaic (Cryo, 25.00%) @ Keg Hop

Other
-------
1 Whirlfloc Tablet @ 5 mins

Water
--------
19.0 g Calcium Chloride @ Mash
15.0 g Gypsum @ Mash
2.0 tsp 88% Lactic Acid @ Mash

Calcium
Chloride
Sulfate
Sodium
Magnesium
Carbonate
150
150
150
10
5
40

Yeast
-------
WLP013 White Labs London Ale

Notes
-------
Brewed 10/8/17

10 gallons filtered DC water and 6 gallons of distilled. All of the salts in at the start of the mash. 2 tsp of lactic acid to lower the mash pH from 5.47 to 5.23.

Sparged with 3 gallons of room-temperature distilled water.

Collected 14 gallons of 1.046 runnings.

Chilled to 76F, placed in the freezer for an hour before pitching, and shaking to aerate. An hour later down to 69F, moved to 63F room to ferment. Internal ~68F for most of primary.

10/10/17 Dry hopped. Around high krausen.

10/20/17 Kegged with the Cryo in the stainless steel canisters. Mosaic and Citra were pellets, Simcoe was powder.

I get a commission if you buy something after clicking the links to MoreBeer/Amazon/Adventures in Homebrewing/Great Fermentations!

Monday, November 13, 2017

Stonefruit Vanilla Nitro Sour!

One slice of white nectarine.Vanilla and fruit are an undeniable combination in desserts. As far as beer goes, it’s gained new popularity in Milkshake IPAs. But it isn't a new combination for sour beer, going back at least the original Cantillon Rosé de Gambrinus (and more recently Zwanze 2016). I decided to try adding a vanilla bean to a quick sour with white peaches and nectarines to provide depth and balance.

My concept was similar to the "Pop" series from Grimm Artisanal Ales - although I was unaware of them until after brewing. I sampled the Pineapple variant while mine was carbonating and wasn't disappointed by the bold flavors! My base beer and process shared more than a few similarities with previous batches (including Rhubarb Berliner, Atomic Apricot). Simple pale grist including oats for mouthfeel, no-boil to retain fresh malt aromatics, and no hops in the kettle.

For souring, I turned to GoodBelly probiotics for the first time. While I could have selected a complimentary fruit flavor, I added two “Straight Shots.” Lacto grows remarkably quickly, so no need to make a starter if they are fresh. I only chilled the wort to 85F with my Therminator plate-chiller. There is no need to maintain a high temperature or worry too much about oxygen contact when souring with a pure culture, so I allowed it to slowly cool to my target pitching temperature of the ale yeast to follow. I boiled the remainder of the wort and it continued on to become Nelson Thyme Saison.

GoodBelly Straight Shot face.After a day of souring I pitched Safale S-04, and shortly after added a split vanilla bean - which incidentally have doubled in price over the last year! The following weekend I visited the local farmer's market and bought a total of 10 lbs of white peaches and nectarines (two of my favorite fruits for sour beer). The nectarines were perfectly juicy and aromatic a couple days later, peaches were a little dry and mealy but still usable. The beer was actually pretty good even before adding the fruit, with the vanilla playing with the doughy malt.

This recipe would be a good candidate for lactose to taste, to reinforce the perceived sweetness that vanilla and fruit contribute, but considering that I’m about to open a vegan brewery… I thought better of it. Instead to replace that “creaminess” I planned to serve the beer on beer gas through my stout faucet. The problem with sour beers (especially quick sours) is that their head retention is often lacking. To combat that, I lowered the pH of the wort pre-souring to inhibit proteolysis by the Lactobacillus.

I wanted more insurance than that though. Reduced isomerized alpha acids can be terrifically foam-positive, but I couldn't find a reasonably sized/priced homebrew-scale source (e.g., Head Master). I so emailed a couple producers and Kalsec obliged with samples of their Tetralone and Hexalone (tetrahydro- and hexahydro-iso-alpha-acids). These are already isomerized – so no need to boil them to impart bitterness like the typical CO2 hop extracts. I added 1 g of the Tetra at kegging for 5 gallons, enough for 6 IBUs. Incidentally Tetra-hop extract used by Miller to allow them to sell beer in clear bottles with no risk of skunking. Could be eye-catching to serve a fruited sour from clear bottles...

Creamsicle Weisse: Stonefruit
Tetralone from Kalsec.
Smell – Nice fresh white-stonefruit aroma, especially as it warms. Some doughiness (like uncooked pie crust). Vanilla adds depth, but isn’t immediately recognizable. Pleasant aroma, but doesn’t jump out of the glass - partly due to low carbonation.

Appearance – Not a spectacular head in terms of volume or retention, but pretty good considering it is a no-boil fruited quick sour! Tetra seems to have done a pretty good job. The creamy nitro-head doesn’t last to the last sip like some of the stouts I’ve run through the tap, but it is solid. The base itself is hazy and pale yellow.

Taste – Flavor has a nice tartness, sort of citric in the finish. Bright and quick. GoodBelly's L. plantarum did an admirable job, no weird Lacto-gaminess.  Solid fruit, but not the intensity I was hoping from such good nectarines. In some previous no-boil’s the doughy flavor has played well with the fruit, but in this case it muddies the fruit and vanilla. I don’t taste a contribution from the hop extract, so it likely could be increased. Nice lingering white peach aroma.

Mouthfeel – While the head survives it adds creaminess to the palate. Other than the low carbonation, a pretty typical light-sour thin body.

Drinkability & Notes – It’s a really pleasant, sort of weird/unique sour fruit beer. A good first try at something new, but I probably wouldn't order a second pour of it at a bar with other things to sample.

Changes for Next Time – Maybe a little light crystal malt to add some perceived sweetness. Boil before souring. Double to hop extract to see if that improves the head retention. More fruit (or better peaches) and maybe even another vanilla bean if it needs it. Half a pound of lactose would be a nice addition if you want it to add a little sweetness. 1/2 tsp dissolved in warm water in the bottom of the glass cuts through the acidity, make it more like dessert.



Recipe


Batch Size: 5.5 gal
SRM: 3.0
White nectarines, onto the peaches!IBU: 6.0
OG: 1.044
FG: 1.011
ABV: 4.3% (ignoring the fruit)
Final pH: 3.46
Brewhouse Efficiency: 70%
Boil Time: 60 Mins

Fermentables
-----------------
81.8% - 9 lbs Dingemans Pilsen
18.2% - 2 lbs Quaker Quick Oats
6 lbs White Nectarines - Day 7
4 lbs White Peaches - Day 7

Mash
-------
Mash In - 45 min @ 152F

Hops
-------
1 g Kalsec Tetralone (Iso Extract) @ Kegging

Water
-------
3.00 g Calcium Chloride @ Mash
2.25 g Gypsum @ Mash
2.00 tsp 88% Lactic Acid @ Mash
0.50 tsp 88% Lactic Acid @ Sparge
3.00 tsp 88% Lactic Acid @ Primary

Calcium
Chloride
Sulfate
Sodium
Magnesium
Carbonate
85
75
90
15
10
90

Other
-------
1 Vanilla Bean @ Primary Day 5

Yeast
-------
GoodBelly Straight Shot
SafAle S-04 English Ale

Notes
-------
Brewed 8/26/17

Mash pH initially 5.50 at mash temp with .5 tsp. 5.38... 5.27... 5.12 (~5.37 at room temp). .5 tsp Lactic mixed in with cold sparge water.

Heated to 170F, ran off ~6 gallons of 1.044 runnings through the plate chiller at 85F. Pitched 2 Goodbelly Straight Shots and added 2 tsp of lactic: pH 4.67. 1 tsp more and got it to 4.45. Left at 68F to sour and cool for the brewer's yeast. Pitched S-04 without rehydration 30 hours after pitching the Lacto. Left at 68F ambient.

8/30/17 Added one vanilla bean, split length-wise.

8/31/17 Down to pH 3.33, but doesn't taste that acidic.

9/02/17 Added 6 lbs of White Nectarines and 4 lbs of White Peaches (weight before pitting and slicing). Bagged in new nylon knee-highs to contain the pulp.

9/17/17 Kegged, squeezing out the fruit bags. Added 1 g of Tetra hop extract to the keg first mixed with 50 g of beer.

I get a commission if you buy something after clicking the links to MoreBeer/Amazon/Adventures in Homebrewing!