I have already brewed my pumpkin ale and it has been in primary for a week. I want to give it a creaminess that I have read comes from lactose. How much should I add to a 5 gal batch. Also is there anything that I could add to possibly improve the head retention of this brew. I am also planning on adding a 1oz of homemade vanilla extract in the secondary (2 beans cut and split in 1/4 cup vodka) Any help is appreciated.