Which ever is cheaper. If there is no difference in price, I would prefer 2-row. Less husk material and more starch/carbohydrates per kernel in the 2-row.
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2 row. Isn't that the standard anyway? I don't think I've ever seen 6-row specialty....
Briess specialty grains are made from 6-row. The standard is 2-row and everyone else uses 2-row to make their grain. I was wondering if people had a preference.