The Devil is in the barrels

After an evening in the Bottleshop Bermondsey with the folks from Duvel Moortgat UK, who were launching the latest Duvel Barrel-Aged edition, I’m still in two minds about barrel-aged beers. Are they better as they come from the barrel, or should you taste them carefully and blend back for a ‘beerier’ flavour profile?

This is the third year Moortgat has run this project. The first batch used 100 Kentucky Bourbon barrels, said Duvel UK marketing manager Natalya Watson, while  the second had 190 and the latest was put into 351 barrels last year. She wasn’t sure if they were new barrels every year, but from reading Duvel's website I think they re-use them after re-impregnating with fresh Bourbon.

They now have barrels from six different distilleries, including Four Roses, Buffalo Trace, Heaven Hill, Jack Daniels and so on. This highlights the challenge of acquiring used barrels in bulk, which is why I reckon they're being re-used. The aged beer was all blended together for consistency before bottling, Natalya said. Bourbon barrels are 200 litres or 53 US gallons, and each yielded enough to fill around 240 75cl bottles – I suppose the 10% disparity must be leakage and other ‘process losses’.

The result is an amber-brown beer that almost glows in the glass and has aromas of sweet vanilla Bourbon, quite unlike the yellow of Duvel itself, with its lemony spicy-hoppy nose. The barrel-aged version is rather sweeter too and warming, with more vanilla and an unexpected faint salty note in the finish.

Draught Duvel

It’s a lovely beer, and people all around were enjoying it for itself, but for me it was a little too barrel-heavy – too much like drinking Bourbon. So since we had both on hand, I tried mixing some Duvel Barrel-Aged with bottled Duvel in about a 50/50 blend. The result was a little lighter, drier and more bitter, livelier (the barrel version had only a very light sparkle) and yes, beerier. I’m not sure what this proves, however, apart from the fact that tastes and preferences vary!

Natalya also introduced those of us who’d not met it before to Duvel on Tap. This is not a draught version of bottle-conditioned Duvel, but the same beer put into kegs and keg-conditioned (yes – if it weren’t for the carbonation that would make it real ale). She explained that the distinction is important because Belgian brewers typically adjust their recipes for kegging, in particular lowering the carbonation to avoid fobbing (excessive froth).

Duvel’s brewers didn’t want to do that, so instead they came up with a new dispense system for their branded fonts. The problem was that it’s a remarkably gassy beer – its CO₂ content is twice that of standard keg beers and three times that of many craft beers. The solution involved two metres of 3mm piping (far narrower than usual, and non-reusable as it’s too fine to clean) to ‘break’ the pressure in the keg, plus anti-fobbing training for the barstaff.

The initial problem for me was that it was too heavily chilled. Duvel recommends 5C for the bottled version, which I think is already too cold, but I reckon the tap beer was even colder (annoyingly, I’d no thermometer with me to check). Still, too cold is better than too warm, and once the chill had lifted the beer opened up considerably while remaining very drinkable.

Mind you, despite being the same 8.5% brew as the bottled Duvel (and Duvel Tripel Hop) we’d been drinking earlier, it didn’t seem as complex. The hops were still there, but not the lemony-spicy note – I wonder why, if they’d got everything else pretty much the same? Still, a lovely beer and one to watch out for.

My thanks once more to Duvel for supplying free beers and arranging the tasting, and my apologies again for how long it's been since I last posted here. Life keeps getting in the way...