Originally Posted by kerant
Ok; I'm no mathematician here so when you say divide by 5, multiply by 7 you do mean each ingredient? I like the idea of multiplying ingredient by 1.4 (simpler); but my question is how do you come to this formula? The reason why I ask is what if I want to convert from 5gal to 6 or 10 ?
Yooper just took 1 as a base. Divide it by 5, then multiply it by 7, you come up with 1.4. Then you can use that for each ingredient.
From 5 to 6 gallon? Take 1, divide by 5, then multiply by 6. 1.2 is your factor.
Any sizes up or down will work. To double check yourself, multiply the original number by the factor. It should come up as the size you are going to. if you are going bigger, the factor will be bigger than one. If you are making a smaller batch, the factor will be less than one.
edit: pdeezy types faster than me!