When I make almond flour I do a few nuts at a time and then I sift it three times. That works pretty well. then I re blend all the stuff that didn't make it through the sifter a little at a time and sift it over again. I usuall make about a quart of flour each time I create this big mess and I do this with oats at the same time too. I never just make as much as I need. I keep the flour in the freezer so it will stay fresh.