Looking for a bit of advice on how I can get my brews to hold a head better. Pretty new to brewing but the few I have put down taste great and seem to be plenty gassy enough,( I did have to leave them sit for longer than two weeks but), they just don’t hold a head for too long. It’s not the glasses as I’ve made sure they are clean and no bubbles on the side so don’t think it’s the glasses. Any advice will be appreciated