HomeFietzerGeibGriffinHofferLauferLotterMarcksMortensenRhoadesThurberWincentsenZillmanZwiefelhoferEmailLance Link

When figuring your water remember your system can vary from others.

Use the 1.4 quarts water per pound of grain. This will be your mash and sparge water amount.

Absorption: Absorption of water in the grain is near .3 for a recipe with up to 20 % adjuncts. (Roast, toasted, rye, wheat) and .35 for all base malt recipe with less than 5 % adjuncts. (mostly 2 row pale malt)

Example: 10 Lb's Grain with 20% adjuncts x 1.4 = 14 quarts water, divide by 4 quarts per gallon = 3.5 gallons mash water.   
3.5 gallons of wort in the mash tun will yield 2.45 gallons after absorption from the grains. 

OR

3.5 x .3 = 1.05 ( 3.5 gal. minus 1.05= 2.45gal.)  2.45 gal. wort plus 3.5 gallon sparge water = 5.95 gallons

Evaporation:

If you loose ONE gallon in the boil from evaporation. = 4.95 gallons.

Knowing this you can do one of two things, Add 16 ounces of water to the Sparge or boil.

OR

If you add a 16 ounce yeast starter (2 cups), you now have 5 gallons and 12 ounces.

After secondary, you end up with approximately 5 gallons.