Can't turn the caps. Bottles are all pop top. Fermentation schedule instructions (which I followed to a tee) is pitch at 72-78F, slowly cool to 50-55F and hold for 10 days, warm up to 60-70F for 2 days, lager at 40F for 3-4 weeks, and bottle condition (room temp for me at about 74F) for 4 weeks.