Stone Ruination DIPA MOD

Water for partial mash: dilute water with distilled or RO water, if needed, to below 100 ppm carbonates (bicarbonate ions (HCO3–) or “alkalinity as CaCO3”), add calcium, if needed, to make 100 ppm Ca2+, use 3:1 ratio of gypsum and calcium chloride for adding calcium ions
(for dilution: filtered tap water)
Procedure:

1. Make yeast starter 2–3 days ahead of brew day.
   
2. On brew day, heat 4.1 qts. of brewing liquor to 165 °F and mash grains at 154 °F for 60 minutes. Stir every 8 minutes or so, if you can do so without losing a significant amount of heat.
   
3. Collect around 1.75 gallons of wort. Add water to make at least 4.0 gallons of wort. Stir in roughly 1/2 of the malt extract, hold at 154 °F for 5 minutes, then bring to a boil.
   
4. Boil the wort for 90 minutes. (If hot break does not appear as big, fluffy flakes after first 15 minutes of boil, add 0.5 tsp. gypsum.)
   
5. Add hops and Irish moss / whirfloc at times indicated. Add water, if needed, so boil volume never drops below 3.5 gallons.
   
6. Dissolve remaining malt extract in wort and stir in with 10 minutes left in boil. (You can do this in shifts.)
   Option: add Fermax 0.5 tsp per gallon as yeast nutrient, 15 minutes before the end of boil.
   
7. Chill wort to 70 °F. If using an immersion chiller, swirl chilled wort and let sit for at least an hour (covered) to let hop debris settle.
   
8. Transfer wort to fermenter, leaving as much hop debris and trub behind as possible. Add water to yield 5.0 gallons.
   
9. Aerate the wort thoroughly and pitch sediment from yeast starter.
   
10. Ferment at 70 °F. If dry hopping in a keg, let beer fall (at least mostly) clear before racking.
    
11. Dry hop for 7 days. Avoid exposing beer to oxygen as much as possible when transferring wort and dry hopping after fermentation.
    
    Double Dry Hopped Option:
    Note to make the Double Dry-Hopped version, remove the first charge of dry hops and add a second charge of the same amount. You can use more Centennial. Simcoe, Citra or Amarillo also work really well.