To prepare Cold Brew Coffee just put coarse grounds into the mesh basket, snap it into place, slowly pour water through it. For best result leave it rest for 24 hours in the fridge. Coffee came out smooth and flavorful without too much bitterness, and the filter is fine enough that there was less sediment than many immersion brewers. Too much sediment can ruin a good cold brew by adding a gritty mouthfeel and aftertaste.