So you've been off carbs for too long and are ready to quit keto. The biggest fear in discontinuing a diet may be weight gain, but changing your eating patterns dramatically can also leave you feeling confused about meal choices when you're used to having so many restrictions. Plain, unsweetened coffee and tea served black are keto-friendly. If you drink your coffee with milk, however, that may be a problem, as one cup of whole milk has almost 13 grams of carbs. If you're on the keto diet, Israetel recommends using heavy cream.