i let mine set in the cooker for a few days after i cook. all the sediment in the oil will sink to the bottom (cornmeal sediment will float on the surface, but i dont use cornmeal)then i pour it back in the jugs it come in, being careful not to stir the stuff up in the bottom. the sediment and little bit of oil left in it, i pour out. if you have floating sediment, use a piece of cheese cloth or a NEW OR CLEAN cloth diaper and strain it through it. coffee filters is too slow and time consuming.