You need a solar oven. You take cactus fruits, and you put the whole fruits in the mixer, yes with spines, they get filtered. Do not mix too much, you do not want to break the seeds. Then you filters the juice in a vegetable mill of 1mm. Then you put 1,5 cm deep of juice in a tray, and put it in the solar oven. After one day in the sun, you get honey (just in one direction). After two days you get a wonderful sweet cactus fruit leather. It is amazingly good, and great to bring in travels and keep for winter. But, if you make the nice mistake of leaving it 3 days in the solar oven, it get all caramelized and black. If you crunch this in the mortar, it is wonderful coffee nicely roasted at low heat, not like industrial coffees that they roast at higher heat and develop carcinogenic compounds. It makes a very black coffee, really amazing, but it does not have caffeine, there are other coffees that have caffeine virtues, like the one from juniper.
