Recreating a 14th-Century Stout: Step-by-Step Guide to Brewing Authentic Medieval Beer

The world is buzzing about craft lagers and hazy IPAs, but there’s a quiet charm in pulling a 14th‑century stout from the past. A brew like that can teach us a lot about flavor, patience, and the simple joy of a well‑made ale. Plus, it makes a great story for the tavern table.

Why Bother with a Medieval Stout?

Most modern stouts are heavy, roasted, and often sweetened with modern sugars. The medieval version was born of necessity, not trend. It used what farmers and monks had on hand: barley, rye, sometimes oats, and a handful of herbs for flavor. Brewing it today lets us taste history, understand old techniques, and maybe discover a new favorite that isn’t weighed down by today’s additives.

The Core Ingredients – What the 14th‑Century Brewer Had

Barley and Rye Grains

Barley was the staple grain for most ales. In the 1300s, malted barley was often mixed with rye to stretch the supply and add a spicy edge. Look for a lightly kilned malt, not the dark, roasted malt we use for modern stouts. A 60 % barley, 40 % rye split works well.

Water

Medieval brewers prized clean spring water. If your tap water is hard, consider a simple pre‑boil or a small amount of gypsum to mimic the mineral profile of a chalky English spring.

Hops vs. Herbs

Hops were just beginning to spread across Europe in the 14th century, so many brews relied on a blend of herbs called “gruit.” For authenticity, use a modest amount of dried yarrow, sweet gale, and a pinch of rosemary. You can still add a few hops for balance, but keep them low – think 5 g per 5 L.

Yeast

The yeast of the day was a wild strain living on the grain husks and in the brewery air. Today we can approximate that with a neutral ale yeast (like a British “English” strain) and let it ferment at a slightly cooler temperature (15‑18 °C) to keep the profile clean.

Equipment You’ll Need

A large kettle (at least 10 L)
A mash tun or a clean bucket with a false bottom
A thermometer
A fermenter with an airlock
Basic cleaning gear (brush, sanitizer)

Nothing fancy – the medieval brewer would have used a copper cauldron and a wooden bucket. Your kitchen gear will do just fine.

Step 1: Preparing the Grist

Measure the grains – For a 5‑gallon batch, use about 4 kg of barley and 2.5 kg of rye.
Crush the grains – A grain mill or a sturdy kitchen roller works. You want the husks cracked, not turned into flour.
Rinse with water – A quick rinse removes dust and any stray chaff.

Step 2: The Mash – Turning Starch into Sugar

The medieval mash was a simple “infusion” mash. Heat 12 L of water to about 68 °C (155 °F). Add the crushed grains, stirring gently. Hold the temperature between 62‑66 °C (144‑151 °F) for 60 minutes. This lets enzymes convert starches to fermentable sugars.

Tip: Keep a thermometer handy. If the temperature drifts, add a splash of hot water or a few cold ones to bring it back.

Step 3: Lautering – Separating Sweet Wort from Grain

After the mash, let the grain bed settle for 10 minutes. Then, slowly drain the liquid (the wort) into your kettle, leaving the grain behind. Rinse the grains with another 5 L of water at 75 °C (167 °F) – this is called “sparging.” The goal is a clear, amber wort with a specific gravity around 1.050.

Step 4: Boiling and Adding the Gruit

Bring the wort to a rolling boil. In the 14th century, the boil would have lasted about an hour, but you can keep it to 60 minutes.

First 15 minutes: Add a small pinch of rosemary and sweet gale. These herbs give a subtle piney note.
At 30 minutes: Toss in a handful of yarrow. It adds a gentle bitterness that replaces hops.
Last 5 minutes: If you like a hint of modern hop bitterness, add 5 g of low‑alpha hops (like East Kent Goldings). This is optional but helps balance the herbal flavors.

Step 5: Cooling the Wort

Cool the boiled wort quickly to about 18 °C (64 °F). A simple ice bath works fine. The faster you cool, the less chance of off‑flavors from lingering heat.

Step 6: Fermentation – Let the Yeast Do Its Work

Transfer the cooled wort into a sanitized fermenter. Pitch the neutral ale yeast – about one packet for this batch. Seal with an airlock and place the fermenter in a cool, dark spot.

Primary fermentation: 7‑10 days at 15‑18 °C.
Secondary fermentation (optional): Transfer to a clean vessel for another week to let the herbal notes settle.

Step 7: Conditioning and Bottling

Medieval brewers often drank their ale fresh, but a short conditioning period improves clarity. Let the beer sit for a week in the fermenter after primary fermentation. Then, bottle with a modest amount of sugar (about 5 g per liter) to give a gentle carbonation.

Store the bottles at cellar temperature (12‑14 °C) for two weeks before tasting.

Tasting the Past

When you finally crack open a bottle, you’ll notice a dark amber color, a smooth mouthfeel, and a faint herbal bouquet. The rye adds a subtle spice, while the yarrow and sweet gale give a gentle bitterness that feels more earthy than modern hops. It’s not the heavy, coffee‑like stout you might expect, but a lively, historic ale that tells a story with every sip.

A Little Anecdote

The first time I tried this recipe, I accidentally used too much rosemary. The brew turned out more “forest floor” than “tavern stout.” My apprentice laughed and said it would have kept the knights away from the banquet table. We learned to halve the rosemary next time, and the result was far more balanced. It’s a reminder that medieval brewing was as much art as science – a little trial and error never hurt.

Final Thoughts

Recreating a 14th‑century stout is a rewarding project that connects us to the everyday lives of medieval folk. The process is simple enough for a home brewer, yet rich enough to give you a taste of history. So gather your barley, rye, and a pinch of herbs, and let the old world rise in your kettle. Cheers to the past, and to the brew that bridges centuries.