Colorado River Cobble Trout Stout

Trout gliding over a cobbled riverbed

A 5.4% stout themed on the Colorado River, roasty and dry, for a cool evening above the canyon.

Brewed to order

Colorado River Cobble Trout Stout is a roasty stout whose label shows trout swimming over a bed of rounded river stones. The label is coloured in cobble browns, tans and slate greys, with a copper-orange badge at its centre.

ABV: 5.4%
IBU: 35
Colour: 34SRM
OG to FG: 1.0561.015

5.4% ABV stout, 35 IBU
Dark chocolate, roasted coffee, toasted oats
Trout over brown and slate river stones
Maris Otter, flaked oats, roasted barley
Second batch level, first pint in 35 days

In the glass

34SRM

Dark chocolate, roasted coffee, toasted oats, a dry finish

Serve: At 50°F in a pint glass under a tan head
Alongside: Smoked trout, campfire chili, dark chocolate

Trout drift across a riverbed of rounded stones in brown, tan and slate. A copper badge sits in the middle. Behind it, the river curls around red canyon rock.

It pours near black with a tan head. Dark chocolate and roasted coffee first, toasted oats underneath, then a dry finish. Open one when the light slides off the canyon walls.

Flaked oats want a steady 154°F mash. Hold it there and the stout keeps its soft, full body without turning heavy.

The numbers

5.4%Alcohol by volume

(1.056 − 1.015) × 131.25

35Bitterness, IBU

Bitterness only means anything against the style. This one is a Stout.

34Colour, SRM

The swatch above is this number on the standard reference ramp, not an impression of it.

Gravity1.056 down to 1.015 — 73% apparent attenuation.

Details

River: Colorado River
Style: stout
ABV: 5.4%
Tasting notes: dark chocolate, roasted coffee, toasted oats, dry finish
Colors: brown, tan, slate grey, copper orange, cream

Make it yourself

A home brew day set up in a garage: kettle steaming on a burner, mash tun and chiller beside it.

At a glance

Style: Stout
Gravity, OG → FG: 1.056 → 1.015
ABV: 5.4%Derived from OG and FG
Bitterness: 35 IBU
Colour: 34SRMnear-black
Difficulty: Second batcha steady mash temperature and calm fermentation decide the body.
First pint: 35 daysFrom brew day, including conditioning
Brew day: 2 h 10 minKettle on to kitchen clean. The rest is the yeast.
You supply: 8 gallon kettle, mash tun, fermenter with airlock, thermometer, hydrometer, wort chiller, sanitiser, bottling bucket, capper
Written for: 5 gal (18.9 L)
Efficiency assumed: 72%Brew-in-a-bag, full-volume. House guidance

Grain bill

5 malts · 11.38 lb for 5 gal

Piles of pale, amber and dark malted barley on a wooden bench beside a scale.

Milled grain, weighed for each batch size. The percentage is each malt's share of the grist and stays the same at every size.

Malt	% of grist	12-pack batch · 1.25 gal	Classic · 5 gal	12×12 batch · 15 gal
Maris Otter	74.7%	2.13 lb (0.96 kg)	8.5 lb (3.86 kg)	25.5 lb (11.57 kg)
Flaked oats	8.8%	4 oz (113 g)	1 lb (0.45 kg)	3 lb (1.36 kg)
Roasted barley	6.6%	3 oz (85 g)	12 oz (340 g)	2.25 lb (1.02 kg)
Chocolate malt	5.5%	2.5 oz (71 g)	10 oz (283 g)	1.88 lb (0.85 kg)
Crystal 60L	4.4%	2 oz (57 g)	8 oz (227 g)	1.5 lb (0.68 kg)
Total grain	100%	2.84 lb (1.29 kg)	11.38 lb (5.16 kg)	34.13 lb (15.48 kg)

Hop schedule

2 additions · 60 min boil

Whole green hop cones and hop pellets on slate, one cone split to show the yellow lupulin.

Pellet hops, weighed in grams. Boil times count down to the end of the boil, so 60 minutes means the first thing in the kettle.

Hop	Use	Time	12-pack batch · 1.25 gal	Classic · 5 gal	12×12 batch · 15 gal
East Kent Goldings	Boil	60 min	11 g (0.38 oz)	43 g (1.5 oz)	128 g (4.5 oz)
Fuggle	Boil	15 min	3.5 g (0.13 oz)	14 g (0.5 oz)	43 g (1.5 oz)

Yeast and pitch

Wyeast 1084 Irish Ale · 1 liquid pack for 5 gal

Wyeast 1084 Irish Ale. Pitch at 64°F.

Yeast	12-pack batch · 1.25 gal	Classic · 5 gal	12×12 batch · 15 gal
Wyeast 1084 Irish Ale	1 liquid pack	1 liquid pack	3 liquid packs

One pack per 5 gal, and one more above 1.060 OG in a batch over 3 gal. Never fewer than one. House guidance

Water

8.16 gal into the mash for 5 gal

Full-volume brew-in-a-bag: all the water goes in at the start and there is no sparge. Volumes are the total to heat, so the kettle has to hold the mash and still leave room to boil: the 12-pack kit sells a 5 gal stockpot and the 12×12 kit a 30 gal kettle for that.

Water	12-pack batch · 1.25 gal	Classic · 5 gal	12×12 batch · 15 gal
Into the mash	2.13 gal (8.1 L)	8.16 gal (30.9 L)	19.98 gal (75.6 L)
Boiled off	0.5 gal (1.9 L)	1.25 gal (4.7 L)	1.25 gal (4.7 L)
Held by the grain	0.23 gal (0.9 L)	0.91 gal (3.4 L)	2.73 gal (10.3 L)
Left as trub	0.15 gal (0.6 L)	1 gal (3.8 L)	1 gal (3.8 L)
Into the fermenter	1.25 gal (4.7 L)	5 gal (18.9 L)	15 gal (56.8 L)

Boil-off, grain absorption and trub are typical figures for a stovetop pot and a propane kettle, not measurements of your own gear. Brew once, note what you end up with, and adjust. House guidance

Water profile Moderate carbonate with chloride a little above sulfate, to round off the acidity of the roasted malt.

Mash

154°F · 60 min

The mash turns starch into sugar. Hold the temperature steady and the beer finishes the way the recipe intends.

Rest154°F for 60 minutes
Strike waterHeat to 164°F; the grain cools it to the rest temperature. House guidance
Mash-outRaise to 168°F and hold 10 minutes, then lift and drain the bag. House guidance

Mash inthe oats and a warmer rest give the body its soft weight
Mash outthis stops the enzymes and loosens the sugars

Boil

60 min · 2 hop additions

Hops go in on a countdown from the end of the boil. Early additions give bitterness; late ones give aroma.

Length60 minutes
60 minEast Kent Goldings
15 minFuggle
15 minA kettle fining (whirlfloc or Irish moss) clears the beer if you have one. House guidance

Chillto 64°Fpitching cool keeps the yeast clean

Fermentation

3 steps · first pint in 35 days

A glass fermenter of amber beer with foam on top and an airlock.

The recipe's own schedule, in order. Temperature control matters more than almost anything else on this page.

66°F for 7 days
Raise to 69°F for 3 days
Cold crash at 38°F for 2 days

First pint 35 days from brew day.

Packaging and carbonation

2.2 volumes CO₂ · bottle or keg

Plain aluminium cans and a small keg on a workbench beside a priming-sugar measure.

Target 2.2 volumes of CO₂.

Bottling	12-pack batch · 1.25 gal	Classic · 5 gal	12×12 batch · 15 gal
Corn sugar to prime	0.91 oz (26 g)	3.62 oz (103 g)	10.87 oz (308 g)
12 oz bottles it fills	12	50	144

Dissolve the sugar in a little boiled water, stir it gently into the beer, then bottle. The amount is worked out for 69°F, the warmest the beer got while it fermented.

Kegging Set the regulator to 8.1 psi at 38°F.

Kegging instead Skip the bottles with 3 × 5 gal ball-lock kegs, 1 × 5 lb CO₂ tank, 1 × dual-gauge regulator, 1 × gas and beer lines with picnic taps: the kegging upgrade for the 15 gal home brewery, $594.

Brewer's notes

3 tips

Stir the flaked oats in slowly so the mash stays free of dough balls.From the recipe
Hold fermentation below 68°F for the first three days to keep the roast clean.From the recipe
Give it a week cold before pouring; the roasted edge softens.From the recipe

A fermenter, airlock, siphon, hydrometer, thermometer and bench capper. — The kit

Every kit size

Ingredients only

Ingredient kit · 12-pack batch

$25.92

$2.16 a bottle

Grain milled, hops bagged per addition, yeast, priming sugar and 12 caps, for 1.25 gal.

Includes Maris Otter · Flaked oats · Roasted barley · Chocolate malt · and 8 more

Every item in this kit · 12 items

Ingredients

Maris Otter$5.502.13 lb (0.96 kg) · Milled to order
Flaked oats$0.724 oz (113 g) · Milled to order
Roasted barley$0.543 oz (85 g) · Milled to order
Chocolate malt$0.452.5 oz (71 g) · Milled to order
Crystal 60L$0.362 oz (57 g) · Milled to order
East Kent Goldings (60 min)$1.5011 g (0.38 oz)
Fuggle (15 min)$1.503.5 g (0.13 oz)
Wyeast 1084 Irish Ale$11.991 pack · Liquid yeast, shipped cold
Milling and kitting$31

Packaging

Corn sugar for priming$0.360.9 oz · Primes to 2.2 volumes of CO₂
Crown capsIncluded12

Guide

Printed brew guideIncluded1

Ingredient kit · 12×12 batch

$169.26

$1.18 a bottle

Grain milled, hops bagged per addition, yeast, priming sugar and 144 caps, for 15 gal.

Includes Maris Otter · Flaked oats · Roasted barley · Chocolate malt · and 8 more

Every item in this kit · 12 items

Ingredients

Maris Otter$66.0525.5 lb (11.57 kg) · Milled to order
Flaked oats$8.673 lb (1.36 kg) · Milled to order
Roasted barley$6.502.25 lb (1.02 kg) · Milled to order
Chocolate malt$5.421.88 lb (0.85 kg) · Milled to order
Crystal 60L$4.341.5 lb (0.68 kg) · Milled to order
East Kent Goldings (60 min)$17.96128 g (4.5 oz)
Fuggle (15 min)$5.9943 g (1.5 oz)
Wyeast 1084 Irish Ale$35.973 packs · Liquid yeast, shipped cold
Milling and kitting$81

Packaging

Corn sugar for priming$4.3610.9 oz · Primes to 2.2 volumes of CO₂
Crown caps$6144

Guide

Printed brew guideIncluded1

Complete home brewery

Complete home brewery · 12-pack batch

$219.74

$18.31 a bottle

Bought separately $241.28 · you save $21.54

All the equipment, then the ingredient kit, for 1.25 gal. Works on a kitchen stove.

Includes 5 gal stainless stockpot · Fine-mesh brew bag · 1.5 gal glass fermenter with drilled bung · 3-piece airlock · and 22 more

Every item in this kit · 26 items

Equipment

5 gal stainless stockpot$49.991
Fine-mesh brew bag$9.991
1.5 gal glass fermenter with drilled bung$17.991
3-piece airlock$2.491
No-rinse sanitizer, 4 oz$12.991
Hydrometer and test jar$15.991
Digital probe thermometer$14.991
Mini auto-siphon with tubing$13.991
Spring-tip bottle filler$5.991
12 oz amber bottles$16.9912
Wing capper$19.991
Brewery wash, 1 lb$9.991
0.1 g kitchen scale$14.991
Long stainless spoon$8.991

Ingredients

Maris Otter$5.502.13 lb (0.96 kg) · Milled to order
Flaked oats$0.724 oz (113 g) · Milled to order
Roasted barley$0.543 oz (85 g) · Milled to order
Chocolate malt$0.452.5 oz (71 g) · Milled to order
Crystal 60L$0.362 oz (57 g) · Milled to order
East Kent Goldings (60 min)$1.5011 g (0.38 oz)
Fuggle (15 min)$1.503.5 g (0.13 oz)
Wyeast 1084 Irish Ale$11.991 pack · Liquid yeast, shipped cold
Milling and kitting$31

Packaging

Corn sugar for priming$0.360.9 oz · Primes to 2.2 volumes of CO₂
Crown capsIncluded12

Guide

Printed brew guideIncluded1

Complete home brewery · 12×12 batch

$1,265.26

$8.79 a bottle

Bought separately $1,387.04 · you save $121.78

All the equipment, then the ingredient kit, for 15 gal. You supply a propane tank and water.

Includes 30 gal stainless kettle with ball valve and thermometer · 72 · 30 gal brew bag · 50 ft copper immersion chiller · and 25 more

Every item in this kit · 29 items

Equipment

30 gal stainless kettle with ball valve and thermometer$3991
72,000 BTU propane burner and stand$991
30 gal brew bag$44.991
50 ft copper immersion chiller$1291
7.9 gal fermenting buckets with lids and airlocks$89.973
No-rinse sanitizer, 32 oz$32.991
Brewery wash, 4 lb$34.991
Hydrometer and test jar$15.991
Refractometer$29.991
Digital thermometer$24.991
½" auto-siphon with tubing$24.991
Bottling buckets with spigots$55.982
Bottle filler$5.991
12 oz amber bottles (6 cases)$119.94144
Bench capper$59.991
Mash paddle$24.991
Digital scale$24.991

Ingredients

Maris Otter$66.0525.5 lb (11.57 kg) · Milled to order
Flaked oats$8.673 lb (1.36 kg) · Milled to order
Roasted barley$6.502.25 lb (1.02 kg) · Milled to order
Chocolate malt$5.421.88 lb (0.85 kg) · Milled to order
Crystal 60L$4.341.5 lb (0.68 kg) · Milled to order
East Kent Goldings (60 min)$17.96128 g (4.5 oz)
Fuggle (15 min)$5.9943 g (1.5 oz)
Wyeast 1084 Irish Ale$35.973 packs · Liquid yeast, shipped cold
Milling and kitting$81

Packaging

Corn sugar for priming$4.3610.9 oz · Primes to 2.2 volumes of CO₂
Crown caps$6144

Guide

Printed brew guideIncluded1

The creator

Dekasso

@dekasso

Wherever the truck rolls to a stop.

See everything by @dekasso

Remixes

No remixes yet — make your own version.

Where this came from

river beer · made September 20, 2026

0 — nothing entered the score yet, at the Derby's published weights, since September 20, 2026. Views are not counted.

stout
colorado river
trout
river stones
canyon
oatmeal
roasted barley
dark beer
homebrew recipe
fly fishing