I just had a weird experience. The flavour was somewhat metallic, but that doesn't quite explain it. I use aluminum foil at the top of my hooka. I am just curious if the side pointing up on the aluminum foil makes a difference? Normally there is a shiny side and a dull side. I know that to clean my bbq, we cover the grill with aluminum foil so a certain side is pointing up so that the broken bonds somehow clean the grill. I am wondering if this makes a big difference. Any help is greatly appreciated!Ryan