Stout vs Porter: Recipes and Brewing Differences

Two Dark Beer Cousins

Stouts and porters are among the most satisfying beers to brew at home. Rich, complex, and layered with flavors of chocolate, coffee, and roasted grain, these dark beers are also remarkably forgiving to brew. But what exactly is the difference between them? The line has blurred over centuries, but distinct characteristics remain.

A Brief History

Porters originated in 18th century London as a popular beer among street porters and laborers. As the style evolved, brewers produced stronger versions they called "stout porter," eventually shortened to just "stout." Today, the styles overlap significantly, but there are meaningful differences in ingredients and character.

Key Differences

Porter Characteristics

• Generally lighter body than stouts
• Chocolate and caramel malt flavors dominate
• Less roasted bitterness
• ABV typically 4.5-6.5%
• Uses chocolate malt and brown malt rather than roasted barley

Stout Characteristics

• Fuller body and more intense roast character
• Roasted barley provides coffee-like bitterness and dry finish
• Creamier mouthfeel (especially in dry stouts and milk stouts)
• ABV ranges from 4% (dry stout) to 12%+ (imperial stout)
• Roasted barley is the signature ingredient

Robust Porter Recipe (5 Gallons)

Grain Bill

• 9 lb Maris Otter or American 2-Row
• 1 lb Chocolate Malt (350L)
• 0.75 lb Crystal 60L
• 0.5 lb Brown Malt
• 0.25 lb Black Patent Malt

Hops

• 1.5 oz East Kent Goldings - 60 min
• 0.5 oz Fuggle - 15 min

Yeast

English ale yeast: WLP002 English Ale or Safale S-04.

Targets

OG: 1.058 | FG: 1.014 | ABV: ~5.8% | IBU: ~35. Verify with our ABV Calculator.

Dry Irish Stout Recipe (5 Gallons)

Grain Bill

• 8 lb Maris Otter
• 1 lb Flaked Barley
• 1 lb Roasted Barley (500L)
• 0.5 lb Chocolate Malt

Hops

• 1.5 oz East Kent Goldings - 60 min

Yeast

Irish ale yeast: WLP004 Irish Ale or Safale S-04.

Targets

OG: 1.042 | FG: 1.010 | ABV: ~4.2% | IBU: ~30

Specialty Stout Variations

Milk Stout (Sweet Stout)

Add 1 lb of lactose (milk sugar) to the boil for your stout recipe. Lactose is unfermentable by brewing yeast, so it adds residual sweetness and body. The result is a creamy, smooth stout with a sweet finish.

Oatmeal Stout

Replace 1 lb of base malt with 1 lb of flaked oats. Oats contribute a silky, full mouthfeel and slightly nutty flavor. They also add proteins that create a thick, long-lasting head.

Coffee Stout

Add 4-6 oz of coarsely ground coffee (cold brew style) to secondary fermentation for 24-48 hours. Use a high-quality medium roast. Taste daily to avoid extracting harsh, bitter compounds.

Brewing Tips for Dark Beers

Dark grains should be milled coarsely or added late in the mash to avoid harsh astringency. Use a water profile with moderate alkalinity to buffer the acidity from roasted grains. Ferment on the cool side of your yeast's range for a cleaner flavor that lets the malt complexity shine. Use our Hop Bitterness Calculator to balance bitterness against the rich malt backdrop.