Color and clarity will tell you a great deal about the quality of the distillationprocess as well as the aging and filtering of what you are about to taste.
But the distillationprocess shortchanged Scene 5, in which he awaits his eye operation: Further exploration of his attachment to the Bricklayer and his fear of losing his past would have been potent here.
Finally, once the biofuel crops have been planted, grown and harvested -- often with the direct involvement of fossil fuels in the form of fertilizers, pesticides and petrol to power farm equipment -- they then have to go through a distillation and fermentation process to actually turn them into fuel.