Coffee is fine for diabetics, as long as it's black coffee. With maybe just a touch of cream and no sugar. I generally get iced americanos; just espresso and water over ice. Tea will actually lower my bloodsugar somewhat and seems to have a lasting effect throughout the day. This is for home brewed green tea, not any sort of bottled shit. Kombucha tea sort of grosses me out. The real stuff looks like the Italian sourdough yeast culture that I started and then later abandoned and left in the back of my fridge. That reminds me that I need to wash and feed that culture and see if there's still any life left in the jar.

Regardless of people always saying, "Don't drink booze, man! That shit is distilled from sugar!" Or potatoes, or whatever. If the bottle doesn't contain any carbs, it isn't going to raise your bloodsugar. Unflavored alcohol can actually lower it somewhat because your liver can't release sugar when its processing out the booze in your system. That's why I like vodka tonics. They have just enough sugar to keep my bloodsugar level up. Beer is horrible because it's loaded with carbs. Wine may or may not have carbs, but there's some kind of magic in red wine because I can drink it all night long and my bloodsugar won't budge.