I recently concluded my side-by-side test of organic American 2-row and non-organic American 2-row. In a double-blind taste-test all four tasters could not only tell there was a difference but each preferred the organic. None of the tasters, aside from me, knew what was being tested--I only asked each sampler "do these beers taste alike?" The OGs weren't exactly the same (1.048 for organic and 1.045 for non-) but everything else was identical. The recipe was a SMaSH lager with very low hops (10ibus). The tasters described the organic lager as being more fruity and complex and less flat. I may try this experiment again with higher gravity beers to see if the differences intensify and to try to better control for differences in og. .048 vs .045 might produce a greater difference in taste than, say, 1.060 and 1.057. I'll report back if I find anything new worth reporting.