Brew in a Bag: Bronze Age Fig Beer
I finally brought to life my Bronze Age Fig Beer, inspired by archaeological findings at Kissonerga-Skalia in Cyprus, in a small-batch brew day that had me flying by the seat of my pants from start to finish.
For small batches, I use the “Brew In a Bag” (BIAB) technique described in the October 2012 issue of Brew Your Own magazine, and also online here. The mash is done directly in the kettle with the grist contained in a nylon mesh bag. BIAB is great for the all-grain brewer looking to save time on brew day, because there’s no sparge. Lautering is as easy as lifting a bag of wet grains (which can admittedly be heavy, if like me, the only workout you get regularly is the ol’ 16-ounce curl). It’s also a great way for extract or partial mash brewers on a budget to explore all-grain brewing without expensive new equipment: just a brew kettle and the same mesh bag you may already be steeping grains in.
Most BIAB brews call for all the brewing liquor up front. The result is a very thin mash – 4 qts/lb in my case – but once the saccharification is done, the bag comes out and the wort can be brought to a boil immediately without sparging. Efficiency suffers, but this can be compensated for with a little extra grain. BIAB works for any batch size, provided the kettle is big enough for the grist and full volume of liquor, but I personally keep it to small batches. This batch was 6 quarts.
The Bronze Age brewer didn’t have a lot of specialty grains to choose from, so I kept my grain bill simple. The only specialty grain was German rauch malt, included to replicate the smoky flavor of malt kilned in a wood-burning oven in a small Bronze Age structure:
- 2 lbs 2-row malt
- 8 oz rauch malt
I mashed in with 10 quarts of water to stabilize the mash at 155 degrees and mashed for an hour, with the kettle wrapped in towels to retain heat. I still had to fire the burner a few times to keep the mash temperature high enough. If you do this, make sure to either take the bag out while the burner is on, or place a plate at the bottom of the kettle to dissipate the direct heat. Nylon mesh bags melt very easily.
Fresh figs are hard to find right now, so I bought dried figs in bulk from the local Whole Foods. I chopped 4 oz, leaving me with a sticky knife, and added them to the kettle to boil for 60 minutes to develop flavor and brown the sugars.
Hops were not used in barley beer until the 11th century CE, so I didn’t use any. Instead, I delved into a fantastic book called The Flavor Bible for inspiration on bittering ingredients that might go well with fig. I settled on a quarter ounce of dried bitter orange peel (a traditional ingredient in Belgian witbiers, and available at most homebrew shops) and 7 sprigs of fresh thyme, and added these to the boil with 5 minutes left, along with another 1.5 oz of chopped figs.
Before boiling, the gravity was a measly 1.026, which would likely have boiled down to something in the 1.030-1.040 range. That’s fine for a session beer, but not for a rustic brew worthy of an ancient Cypriot warrior. To raise the potential alcohol, I added a pound of wildflower honey at flameout. According to Patrick McGovern’s Uncorking the Past (another fantastic book), many ancient brews were “grogs” made by mixing fermentable sugars – malt, grapes, honey, other fruits – so I was still channeling my Bronze Age forebears here, though this could technically qualify as a “braggot” by modern standards.
When all was said and done, with sugars from malt, figs, and honey, the wort at pitching time was 1.078, a fairly big brew. I pitched a 600 mL starter made from Dogfish Head Midas Touch dregs I cultivated from a bottle.
Would the ancient brew gods reward my efforts with the dulcet tones of a gurgling airlock? Find out in my next update.