Using the posts here i have extracted the liquids from about 8lbs of mackerel. My method of extraction was the salt layer method. I can't find the original thread that it was in. I cut the mackerel up in chunks and layered them between the salt in a 2 gallon drink cooler (it's the type of cooler you just put the drink in, like the gatorade ones used in the major league sports). After a week of sitting on my patio in the sun i drained it via the spout. I filled up a 32oz container with the so called "liquid gold". Now the only issue i have is that it's very runny, more like water then oil. Anyone have any ideas on how to reduce it down to something thicker? I don't really want to add anything to it. I just want to concentrate it more. I have already tried to let the water evaporate off and that is not working. Anyone ever tried to boil off the water in the liquid? Would this cook the oil? You know how when you boil water and the condensation forms on the lid? You think i could just stand there and pour off the collected water drops till it thickens? I am looking to make a thick oil to squirt on my bait from a squeeze bottle. The only other option i see is adding a thickener like flour or something, but i am more interested in creating a thick oil than a dipbait. Any ideas would be appreciated!