Contrary to what Atkins suggested, I still drink lots and lots of regular coffee and my keto strips still turn very purple. Rather than milk, I use half and half or whipping cream, and rather than Nutra -Sweet I use Splenda which taste more like real sugar. It leads me to wonder why some people have bad results with coffee on the keto diet. For those of you who miss the coffee vice, it might be worth giving it a test drive and keeping a close eye on the keto strips to make sure it does not throw you out of ketosis. As what works for me may not work for others. But I do not keep coffee at home. I limit to getting it at fancy coffee houses like Starbucks to make the experience more special. Coffee is now my desert of the day.