Practical tools for better fermentationFree calculators · No account required

Beer Brewing · Advanced

Oatmeal Stout

A smooth stout template using oats for body. Mash consistency and lautering can be affected by the grain bill; use a proven process for your system.

Batch size19 L (5 US gal)
Estimated ABV4.2–6.3%
Estimated OG / FG1.050–1.060 / 1.012–1.018

Recipe parameters are estimates, not guarantees. Measure gravity and follow yeast, nutrient, sanitation, and safe-packaging instructions for your ingredients and equipment.

Ingredients and batch scaling

Scale ingredient amounts proportionally from the 19 L (5 US gal) base recipe.

L

Adjust the batch volume to update the ingredient amounts below.

  • 4 kgpale malt
  • 0.5 kgflaked oats
  • 0.35 kgroasted barley
  • 0.25 kgchocolate malt
  • 30 gbittering hopsStarting estimate; adjust to the recipe target.
  • 1 packetsuitable ale yeast

Method

  1. Mash the grist near 67 °C; use a process that supports a clear, workable runoff.
  2. Boil with a measured bittering addition, then chill and aerate.
  3. Pitch yeast and ferment within its recommended temperature range.
  4. Verify stable gravity and allow time for roast and oat flavors to integrate.
  5. Package with moderate carbonation after fermentation is complete.

Suggested fermentation timeline

  1. Brew day: mash, boil, chill, and pitch.
  2. Days 1–10: ferment and monitor temperature.
  3. Days 10–18: confirm stable gravity and allow conditioning.
  4. Package when stable and ready.

Scaled quantities are proportional estimates. Yeast pitch rates, process losses, and equipment efficiency may not scale linearly.

Useful for this batch

Related calculators