Add salts to all waters(RO) Mash 3 gal, sparge 5.2 gal. Gypsum 0.5gm, Mag Sulf 1.3gm, Ca Chloride 0.5gm, Mag Chloride 1.5gm, Ca Carbonate 2.25gm. Add Phosphoric 10% 6ml to mash water and 2ml to sparge water. Mash without the false bottom in tun at 153F x 60min. At end of mash add 14.66 oz crushed acid malt & stir. Place in sterilized metal pot & cover with Saran wrap on mash surface, Purge with CO2 and seal all lid edge with electrical tape. Apply heat belt and tape probe on side of pot 3/4 of the way up on mash mass & set controller at 105F. Place Pot on Styrofoam insulation and Cover pot with blankets overnight til 110F (record controller temp and time points, do not open pot) When 110F open pot & add double hand full crushed 2-row and gently stir in well. (do not want to add in oxygen to mash). Repeat cover with saran on surface and purge with co2/lid tape. Sour mash at 105f x 24h minimum. Longer if you want to increase the tartness and or up the temp to 110F to increase tartness. In 24h, place mash in lauter tun with false bottom and stir in 1/2 lb rice hulls. Sparge as normal, collect 6.75gal. Add 7 IBU Noble Hops at 60min. Boil til 5.5 gal. Ferment with SA-5 at 68F. Add 7.5 lb diced Rhubarb & 2 lb Apricots (or 1/2 bottle of Natural Apricot flavoring found in homebrew shops) to secondary. Bottle at 3.5 volumes. |