Wow!
Inspired by this thread I went out and bought a smallie of Leffe Radieuse and a couple of other yummy Belgians to go with my belgian brew day. I can not beleive how close this beer is to my last dubbel, based on JZ's recipe. Seriously, I smelt it and went "no way!", then a taste and I seriously could not believe how close this beer is to my last homebrewed Begian Dubbel. I thought they were identical...so I poured one of mine aswell so I can compare them side by side.
View attachment 41184
I marked the glasses coz I know I would have got them mixed up in no time. 'L' on the left is the Leffe and 'M' on the right is mine. Here's my recipe straight out of the brew log...
JZ's Belgian Dubbel
With Hallertau instead of Tettnanger + 30g more candi syrup (1/2 a 500ml bottle)
ALL GRAIN 22 litres
4.8kg Pilsner Malt (Dingerman's)
450g Munich Light (12L)
230g CaraMunich (60L)
230g Aromatic (18L)
230g Special B (120L)
370g Dark Candi Syrup (half a 500ml bottle)
230g White Sugar
20g Hallertau Mittelfruh 5.3% (2008) 60min
10g Hallertau Mittelfruh 6.3% (2009) 60min (using up stores)
Yeast WLP530 starter made 4 days early then fed 1st runnings. Very active.
16IBU (Tinseth / 22 IBU Rager) based on 70% efficiency
1.064 OG recorded 1.012 FG Recorded
6.5% ABV + .2% priming (120g Dextrose) = 6.7%
Added 1/3 tsp of bicarb to 17L mash water adding alkalinity to cater for 12-18SRM
I fermented at 18C finishing at 21C. These beers are SO DAMN CLOSE! Drinking them side by side there are some subtle differences and I would tweak the recipe a little if I was going for a clone. The most prominent being the more obvious alcohol warmth in the leffe, both in aroma and flavour.
The aroma is almost identical, dark fruit sweetness...where the Leffe opens up at the tail end with a slight solvent note, my dubbel seems to close with a nutty finish, perhaps just a touch more intense dark fruit too - but very, very close.
Both have complex, rich fruit flavours. Again the Leffe dissipates with alcohol warmth, very balanced thoughout while my lingers a bit longer and finishes sweet. I personally prefer Chiimay Red - I'm a sucker for caramel - so I have since changed my recipe to reflect a move in that direction...however if I wanted to clone Leffe Radieuse there's not much I would change. I reckon the malt bill is pretty much spot on but I'd add more of the base pilsener to match the ABV.
I would up the IBU's to around 20 Tinseth - I get no late hop character from the Leffe, definately a bit more bitter but no obvious Saaz or Styrian Goldings flavour so I'd stick to Hallertau at 60 min.
As far as water profile...I would look at upping the sulphates balance slightly, my soft water favours chlorides at about 3:1 so I'd throw in some salts to get the calcium to 50ppm and the chlorides to sulphates balanced.
I would up the carbonation to 160g dex looking for around 2.8 gravities.
For a clone of the Leffe, I reckon the WLP530 is definatley the same yeast profile. I was a bit underwhelmed, I prefer the clovy spiciness of Chimay Red but I have no doubt that the Leffe and mine share the same yeast profile - seriously I cannot beleive how close these beers are!
Now that they're both warm (I've been writing this for a while) the Leffe is revealing a hint of roast that wasn't there earlier and mine seems a lot more 'drinkable' (dangerous). I have a six pack or so left of my dubbel and I would be more than willing for a reputable brewer to come by and do the pepsi challenge, byo Leffe Rad of-course
Cheers