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iterative mashing

Brew Bama

Master Brewer
Apr 29, 2014
Reaction score
Huntsville AL
How would you address iterative mashing in BeerSmith? I have all grain brew No 200 since AL made homebrewing legal coming up in the Spring and I have begun planning for it. A double hazy IPA using a double iteration mash.

this is how I did it:
Keep it simple. Half the mash recipe and prep 2 batches. Mash the first in full volume treated water (liquor). This provides sufficient liquor for the second mash, which doesn't need any more water treatment. Due to all the first wort molecules from the first mash, enzymes and substrates collide at a lower rate and lower the efficiency of the second mash. You'll need to determine this empirically for your own equipment, ingredients and procedure. I wouldn't try to compensate until you have some idea based on mashing your recipe as is. You can always add some sugar later in the boil or in the FV. It's not going to be detectable in the end product.
What's the advantage of this method over just doing a regular mash with all the grain?
Never mind, I just looked it up. I hadn't heard of this before. Have to admit I have just cheated and added malt extract!!
A new method to try - thanks.