Ive nearly completed collecting a new 5 litres of saliva from my 'bone. I simmer it on a very low heat until its reduced by about a third of its volume and then let it cool. Then add half the volume of coarse polenta and a tbs of glycerol. This makes an excellent facepack. I know it sounds weird, but it is an excellent way of using up excess spit rather than it going to waste.