Based on a version of a version of Aleman’s Effin Oatmeal Stout. I’m hoping for something along the Samuel Smith’s Oatmeal Stout (hereafter SSOS!) lines.
- Length: 25 litres
- Yeast: Windsor
- OG 1.049
- FG 1.011
- ABV 4.9%
Recipe:
| Fermentable | Colour | lb: oz | Grams | Ratio |
|---|---|---|---|---|
| Pale Malt | 5 EBC | 8 lbs. 15.1 oz | 4060 grams | 66.1% |
| Oat Flakes | 2.5 EBC | 1 lbs. 9.9 oz | 735 grams | 12% |
| Crystal Malt | 130 EBC | 0 lbs. 11.6 oz | 330 grams | 5.4% |
| Brown Malt | 150 EBC | 0 lbs. 11.6 oz | 330 grams | 5.4% |
| Roasted Barley | 1350 EBC | 0 lbs. 9.1 oz | 260 grams | 4.2% |
| Flaked Barley | 0 EBC | 0 lbs. 8.6 oz | 245 grams | 4% |
| Chocolate Malt | 1050 EBC | 0 lbs. 6.5 oz | 185 grams | 3% |
| Hop Variety | Type | Alpha | Time | lb: oz | grams | Ratio |
|---|---|---|---|---|---|---|
| Bramling Cross | Whole | 7.0 % | 90 mins | 0 lbs. 1.8 oz | 50 grams | 100% |
| Final Volume: | 25 | Litres |
| Original Gravity: | 1.053 | |
| Final Gravity: | 1.015 | |
| Alcohol Content: | 4.9% | ABV |
| Total Liquor: | 36.6 | Litres |
| Mash Liquor: | 15.4 | Litres |
| Mash Efficiency: | 75 | % |
| Bitterness: | 34 | EBU |
| Colour: | 198 | EBC |
Comments:
As recommended by Aleman, I attempted a Beta Glucan rest with this recipe. I toasted the oat flakes (45 mins at 130C, but they weren’t looking very toasty, so I raised it to 180C for another 15 mins). I combined the oat flakes with 145g of the pale malt and around 2.2 litres of warm water. My water was too warm so I ended up with a sticky mash at around 50C rather than the suggested 35C. A bit of cold water brought it down to 40C, at which point I left it alone for 30 minutes. This is all while the main mash is going on in the mash tun.
After it had 30 minutes I put the heat on and raised it to 67C, then I added it to the mash tun.
Notes for future attempts: do the toast the evening before (as the oats were still hot when the went into the mash, hence the temperature overshoot!). This was my intention, but it’s been a long week and last night I was too tired to be bothered.
A bit more wort than I needed – it’ll be around 35 litres. Measured at 11°Bx = 1.042. I collected 15 litres from the first sparge, but the second was more than I expected – I suppose I should have shut the tap off earlier, but it doesn’t really matter. I’m doing the boil outside again, since it looks like a reasonable afternoon. The boil should have been reached a bit quicker than it actually was, but that’s because I forgot to turn the socket on, and it took me a while to wonder why it wasn’t making kettle-like noises!
OG measured at a definite 12°Bx, maybe 12.6°Bx at the most (I should probably work out where to read the thing!), which means I have 1.046 to 1.049. Hydrometer agrees with 1.049, and I have about 24 litres of wort.
2011-04-16: Bottled 12, 5 litre mini-keg, plus ~13 litres in the main keg.
2011-05-21: God, this is good stuff. Smooth mouth-feel, roasty coffee flavours, enough bitterness. Lovely stout – my favourite all-grain so far!