We have plenty of experts on flushing here on rollitup. Like I said with me the biggest thing is the chlorophyll at the end makes the weed harsh. The curing process is one of the most important parts and it takes care of most of the harshness but the green taste is what I don't like. Definitely look up curing. I want my terpene profiles to stand out and the smoke to be smooth and not make you cough. In my signature at the bottom of my post it says water only. click on it and give it a look, its a good read. I use tap water start to finish with a little raw cane sugar to keep the microbes happy.