Provided are dry-milling methods for producing an aqueous fermentation feedstock ingredient. The methods include providing a corn-processing filtration feed； filtering at least a fraction of said filtration feed on a microfiltration membrane, whereby an aqueous filtration permeate and a filtration retentate are formed； separating said filtration permeate from said filtration retentate, to form separated permeate and separated retentate； forming a fermentation feedstock comprising said separated permeate, and saccharifying and/or washing said separated retentate.
