I prefer to use citrus peel without the pith. The pith is bitter and not good bitter. I bought a pound of sweet dried orange peel with the pith once and used various quantities. The maximum dose I could tolerate was 3oz in 6 gallons. This beer had some bitterness that wasn't pleasant, but the bitterness completely faded after 2 months in the bottle. The orange flavor didn't fade and seemed to improve with time.If you don't use the pith, the beer tastes good right out of the gate. It's sort of a pain to get the skin without the pith, but the effort is worth it. I don't weigh the skin and use a similar quantity as Mort.