How Much Grain is Used in Distilling

[B-RAD 22]

Hello,

I am currently making a business plan for a potential distillery. Currently I am trying to create a dollar amount of the total cost of production, and one of the costs is the grain used for the process. 

Does anyone know approximately how much grain is used for fermenting? I am planning on making vodka/gin and later on whiskey.  My fermented and still pot size is 500 liters (130 gallons). 

 

Thanks

[Eud]

Normal mash is in the neighborhood of 2 pounds per gallon more or less.

[B-RAD 22]

Thanks, this helps me big time. 

I think the ratio is generally 4 to 1, i.e. 2 pounds of mash per 8.34 pounds (1 gallon) of water. 

[SSVI]

If you want to get all metric with it, 3-4 liters of water per kg of mash is typical.