Ok I just brewed my 2nd batch of beer still nervous about what I am doing I decided to do the same beer kit I did for my first batch witch was a Pilsner. I did this because the first batch turned out great and wanted to see if I could make it better by adjusting how I brewed it. The first batch I followed the directions that came with the kit. The second time I wanted to try some techniques for a better beer out of "The Complete Joy of Homebrewing", this involved a long brew time and re hydrating the yeast before pitching it. I knew just a couple days after things were different the beer was not fermenting nearly as fast as my first batch and did not produce the yeast cake like the first batch. Now after bottled and ready to drink I am finding the beer is sweeter than normal and some bottles seem completely flat with no head and others have a fizzy taste like a soda and do produce a head but quickly loses it. Has anyone had this happen of know what I could have possibly done wrong? I am getting ready for my 3rd batch but don't want to wind up with the same mistakes.