Scotch Ale Recipe: How to Brew a Smoky, Malty Wee Heavy at Home

Why Scotch Ale Deserves a Spot in Your Brew Rotation

If you have ever taken a sip of a well-made wee heavy and felt like you were sitting next to a fireplace wrapped in a wool blanket, you already understand the appeal. Scotch ale is one of those styles that rewards patience and restraint, ironic, given that the malt bill is anything but restrained.

This recipe targets an OG around 1.080–1.090, which puts you squarely in the "wee heavy" territory (Scottish-style strong ale). You are looking at roughly 7.5–8.5% ABV when all is said and done. Use our ABV calculator to dial in your exact numbers once you get a gravity reading.

The Grain Bill: Building Layers of Malt Character

The backbone of any Scotch ale is malt, malt, and more malt. Hops take a back seat here, think of them as just enough bitterness to keep the sweetness from becoming cloying. Your grain bill should look something like this for a 5-gallon batch:

• Maris Otter, 12 lbs (base malt, biscuity backbone)
• Munich Malt, 1.5 lbs (depth and melanoidin richness)
• Crystal 60L, 1 lb (caramel sweetness)
• Crystal 120L, 0.5 lb (dark fruit, raisin notes)
• Peated Malt, 0.25–0.5 lb (the smoky signature)
• Roasted Barley, 2 oz (color adjustment, a whisper of roast)

Mash Schedule: Low and Slow Wins the Race

You want a higher mash temperature to leave residual sweetness and body in the finished beer. A single-infusion mash at 156°F (69°C) for 60 minutes works well. If you are feeling ambitious, try a step mash:

1. Protein rest: 131°F (55°C) for 15 minutes
2. Saccharification: 156°F (69°C) for 60 minutes
3. Mash-out: 170°F (77°C) for 10 minutes

One traditional technique worth considering is a long boil, 90 minutes instead of 60. The extended boil drives off DMS precursors from the Maris Otter and creates additional melanoidins, which contribute to that toffee-like complexity that defines the style.

Hop Schedule: Keep It Simple

This is not an IPA. Resist the urge to make it one. You want just enough bitterness to balance the sweetness, and that is it. Target around 25–30 IBU using our hop bitterness calculator to get precise numbers for your specific hops.

• East Kent Goldings, 1.5 oz at 60 minutes (bittering only)

No late additions. No dry hops. No whirlpool hops. Let the malt do the talking.

Yeast Selection and Fermentation

Scottish and English ale yeasts work best here. Good options include:

• Wyeast 1728 (Scottish Ale), clean, slightly malty, the classic choice
• White Labs WLP028 (Edinburgh Scottish Ale), similar profile, slightly more attenuation
• Safale S-04, reliable dry yeast option if liquid is not available

Ferment cool for an ale, around 60–63°F (15–17°C). Scottish yeasts perform beautifully at these lower ale temperatures, producing a clean fermentation profile with minimal ester production. You want the malt to shine, not banana and bubblegum.

Primary fermentation should take 2–3 weeks. Then comes the hard part: conditioning. A proper wee heavy benefits enormously from extended aging. Give it at least 4–6 weeks in secondary or at cold-crash temperatures. Eight weeks is even better. This beer transforms with time.

Carbonation and Serving

Scotch ales are traditionally served with low carbonation, around 1.5–2.0 volumes of CO2. If you are bottling, use about 2.5 oz of corn sugar for 5 gallons. If you are kegging, set your regulator to 8–10 PSI at 38°F and let it carbonate slowly over a week.

Serve at cellar temperature, around 50–55°F (10–13°C). This is not a beer you want ice cold. The warmth opens up the caramel, toffee, and smoke notes that make this style special.

Troubleshooting Common Scotch Ale Issues

• Too smoky: Reduce peated malt by half on your next batch, or switch to Briess cherry-smoked malt for a gentler smoke character
• Too sweet / not enough attenuation: Lower your mash temp to 152°F, or use a more attenuative yeast strain
• Thin body: Add more Crystal 60L or increase Munich malt, and make sure your mash temp is hitting 156°F
• Hot alcohol flavor: This screams "not enough aging." Give it more time, seriously, 2 more months minimum

Final Thoughts

Brewing a Scotch ale is an exercise in restraint and patience. You build a massive grain bill, keep the hops minimal, ferment cool, and then wait. The waiting is the hardest part, but it is also what separates a good wee heavy from a great one. Start with the lower end of the peated malt range, nail your fermentation temperature, and let time do the rest. Your future self will thank you when you crack open that first bottle a few months down the road.