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Recipe: Lambic-esque Solera Year 1
Style: Straight (Unblended) Lambic
TYPE: All Grain
Recipe Specifications
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Boil Size: 7.53 gal
Post Boil Volume: 5.88 gal
Batch Size (fermenter): 5.25 gal
Bottling Volume: 4.85 gal
Estimated OG: 1.054 SG
Estimated Color: 3.6 SRM
Estimated IBU: 8.8 IBUs
Brewhouse Efficiency: 70.00 %
Est Mash Efficiency: 75.3 %
Boil Time: 90 Minutes
Ingredients:
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Amt Name Type # %/IBU
5 lbs 8.0 oz Pilsner (2 Row) Ger (2.0 SRM) Grain 1 50.0 %
5 lbs 8.0 oz Wheat, Torrified (1.7 SRM) Grain 2 50.0 %
0.50 oz Tettnang [4.50 %] - Boil 90.0 min Hop 3 8.8 IBUs
1.0 pkg Geuze Tilquin Dregs
1.0 pkg Brettanomyces Claussenii (White Labs #WL Yeast 5 -
1.0 pkg Brettanomyces Lambicus (White Labs #WLP6 Yeast 6 -
2.00 oz Oak Cubes, American (Secondary 12.0 week Flavor 7 -
Mash Schedule: Temperature Mash, 2 Step, Medium Body
Total Grain Weight: 11 lbs
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Name Description Step Temperat Step Time
Protein Rest Add 14.75 qt of water at 118.6 F 113.0 F 15 min
Saccharification Add 0.00 qt of water and heat to 122.0 F over 15 min 122.0 F 30 min
Mash Step Heat to 149.0 F over 4 min 149.0 F 15 min
Mash Step Add 0.00 qt of water and heat to 159.0 F over 4 min 159.0 F 45 min
Mash Out Heat to 168.0 F over 10 min 168.0 F 10 min
Sparge: Batch sparge with 2 steps (Drain mash tun , 5.41gal) of 210.0 F water
Starter: Jan. 22, with re-used Brett. C.; Brett. L. (from an experimental beer that oxidized and became rather vinegary); and dregs from Geuze Tilquin, cultured by a guy in the homebrew club. By Jan. 25 the starter was actively fermenting and smelled pretty strongly like rising bread dough.

The direct heat step mash was a slow and labor intensive process, since I had to constantly stir while applying heat in order to avoid scorching and to distribute the heat throughout the mash. I hit my temps well, but over the course of the 159F step some of the mash may have cooled a bit.
To sparge, I transferred the mash from my 5-gallon kettle into my MLT, and added rice hulls after the sparge became stuck. The 210F sparge water may have extracted some tannins but apparently this is normal for a lambic. The buys will chew some of them away.
Pre-boil OG was 1.044, slightly under volume. Post-Boil OG was 1.060, slightly below volume.
Cooled to 135F, racked to sanitized sour bucket and allowed to cool overnight to pitching temps. I left some trub in the kettle but probably transferred a bit of it into the fermenter. 5.25 gallons into the bucket.

I am not sure if the long multi-step mash is necessary, but it's traditional, and my wife was away all day. So why not?
1/31/16: Decanted half of starter and stirred up the settled yeast. Pitched into wort without aerating at all. Left at room temp approximate 70F.
2/21/16: Active stages of fermentation were over. Racked to 5 gallon carboy, with 2oz of boiled oak cubes. (Boiling to remove excess tanins.)
Added dregs: Roselare and Wyeast Dabom from previous beers. Also contains some champagne yeast used for bottle-carbing.
2/26/16: Made low gravity starter and added dregs of Boulevard Saison Brett 2015. Will add Roselare dregs as well, and then if I get some fermentation will add to main beer.