I have been enjoying a beer from New Belgium. CITRADELIC, Tangerine IPA. I am quite impressed with it. It would fit in my home brew lineup because I enjoy citrusy beers, Citrus Mistress is another. I would like to take one of my existing recipes and infuse some orange or tangerine peel. My question is, at what stage of brewing do I add the puree or pieces of peel and approximately how much per 5 gallon?