Where I live at the right time, we have lots and lots of these ... in the streets, in the parks, under lamposts, cemetery's.... well you get it. so I figured I'd clean up the streets, and possibly take some of the strain off the NHS. so I thought I'd give em a bath ... a fairly warm one ... until they were all burst n soft , (some encouragement with the spud masher). Dumped em into a cheese cloth and squeezed the bejesus out of em. I kept the bath water on a low roll to evaporate the water and scraped the ring that formed at the water line back into the solution. In the end I was left with a kinda "feel good Marmite" or (Nag Relief Tar)... *disclaimer this product will not stop a nagging partner, but will provide relief from the headache associated with said nagging.* I did get a little carried away ...... and after a few hundred more heads filled my jars . Tea anyone ?? Tar very much.