OK

All the POR has been harvested, and dried in 6 seperate batches.

The figures of 80% moisture down to 8% moisture were preety much spot on. I got 1495g of wet hops and dried them down to 418.5g.

418.5 / 1495 = 0.28 or 28% residual weight.

But...........

the drying process was uncontroled and each batch ended up different, with residual weights ranging from 22% to 38.3%

154g - 45g = 0.292 or 29.2%

154g - 45.6g = 0.296 or 29.6%

200g - 44g = 0.22 or 22%

357g - 108g = 0.302 or 30.2%

480g - 118.4g = 0.246 or 24.6%

150g - 57.5g = 0.383 or 38.3%

The issue i have with this, is i want consistancy. I cant know exactly what the AA% of the hops is but i can have a good guess and say 8%..... a bit less than comercial. I will brew a regular beer (aussie pale ale) with them at this number and if its too bitter, i will up the AA%, too sweet i will drop it.

but...........

How do i know how much hops to use. We add hops by weight, and with inconsistant moisture levels, that can mean im adding a lot more or less hops due to moisture levels difference (weight).

today i brewed with the 44g of 0.22 ratio hops. They were as dry as dry. They were the ones i left in the dehydrator overnight, and were much drier than comercial whole hops. kind of like the dry crispy wings of a dead moth thats been sitting in the windowcill for a while. The 38% ones feel quite soft and suple in the vac sealled bag.

So running with this 0.28 ratio figure, i have done some maths to give me an equivelent amount, given the wet and dry weights are known.

Take the dry hop amount, devide by its dry/wet ratio and multipy by my 0.28 ratio i want to give a moisture compensated equivelent amount of hops.

44g / 0.22 x 0.28 = 56g equivelent

57.5g / 0.383 x 0.28 = 42g equivelent

the difference between 44g and 56g was 7 IBU in a 35 liter brew of Aussie Ale.

So the first brew will be a suck it and see run to find how close i got with the AA%, but once i know that...... i can acurately calculate how much weight of hops to use no mater what their residual moisture level.

Yes i know...... severe case of beer geekdom