I cooked a roo of mine for Thanksgiving dinner in a crockpot. He had more fat than I expected which I thought was nice. When he was done I pulled out one of the whole potatos and it had what looked like yellow tinted clear jello on the sides. The other potatos were simular with attachments of what I take is clear cooked chicken fat. When I opened the potatos I found that they were dark almost sweet potato like. They tasted fine. It just seems that the chicken fat was drawn to the potatos and then the potato sucked out the nutrients from the fat. Is this normal? If so why?