singh

Hi fellas, Kinda new here, very new to distilling to be honest, which would be more clearer from my questions, I just request you to bare with me and help me out here If i am to make whiskey from corn, rye, malted barley or wheat, how much grain would i need to make 1 liter of whiskey using only one grain at a time, i.e.if i had to make 1 liter of whiskey(40 proof) from only corn, how much corn would i need to make that 1 liter of whiskey. similarly for other grains, how much grain would i need to make 1 liter of whiskey if it was to be made exclusively from 1.wheat, 2. Malted Barley, 3. Rye I understand that grain based vodka is best when flavorless, so it's basically ethanol distilled a few no. of times, so my questions above kinda repeats itself here, if i was to make 1 litre of 80 proof vodka from corn, how much corn or how much ethanol would i need. Is there any formulae to calculate this, Thanks for your help Amit (P.S., I have no access to books, so if you are referring to a reading material, please tell me the ones which are available online, thanks)