Water, black coffee, tea - no milk, apple juice - NOT cider, broth - canned is clearest, mixed juices with no red or purple color. I think most carbonated soft drinks are clear, but should probably be avoided under the circumstances.
Carbonated soft drinks do not count, for purposes of “clear liquids”, both because of the acidity and the gas. Neither do any alcoholic drinks, no matter how colorless and transparent. And at least in Spain coffee or black tea aren’t acceptable either (green tea is, but as j666 said no milk). If your coffee is see-through it’s not coffee. Grape juice is ok (with possible grumbles if it’s black - I guess you’d call it red), as is clarified apple juice (not fermented); OJ and tomato aren’t because they’re acidic.
Unsurprisingly, they don’t include mayo on their list. Obviously because it’s neither clear nor particularly liquid. And also, why would you drink mayonnaise? <insert yuck emoji here>
I read the Mayo Clinic link, and I’d go with that. Soda, even dark soda, is OK, as are fruit juices. For me, the hardest part of a clear liquid diet is that I get headaches from hunger.
For just one day I’d stick to water, gelatin, and broth to make it easy on myself. I don’t want to worry that something I’m eating or drinking isn’t clear enough. If it was longer than that I’d have to consider better nutrition.
I have heard (that is, I have no citation) that a glass or two of beer may be allowed. This was after my last appointment to ‘ride the python’ (all clear, thank you), so i have not verified this with a medical professional. YMMV.
I suspect that a beer on a very empty stomach would hit hard and fast. Be careful.
Argh! I really wanted passionfruit juice to be okay. But I can’t see through it, so, I guess, actually not clear.
And tea but no milk? Grrr.
But gelatin, does that have to be clear? Or is mango flavour okay? (I first made black currant, but, I forgot…it’s red!)
I’m one of those people who really needs to eat every few hours, I have the metabolism of a squirrel. I got some hard candies this time, I’m hoping that will help, a little. At least with my mood anyway.
Well, that goes without saying, but black allowed in the US, but I think no more than one cup. The hospital I used to go to for fasting blood work offered a cup of juice and had a Dunkin Donuts in the lobby.
Red foods dyes are prohibited for colonoscopies to minimize false positives.
What particularly you can have off the list I posted from the Mayo Clinic depends upon WHY you are on a clear liquid diet. For example, back in 1974 I had a right inguinal hernia repair. At the time, that was not a simple out-patient procedure; it involved a full-sized cut into the abdomen. I was on a clear liquid diet for a couple days after. Since that was merely to keep me from having any stool issues, it didn’t matter what color the liquid was.
If you are having a colonoscopy, or some similar procedure, you may be restricted from having various colored/dyed liquids because even though they won’t put unwanted solids in the digestive tract, they can obscure or improperly stain, causing false positives (as noted somewhere above). Red Jello[sup]®[/sup] is a classic example, which is annoying because I love cherry-flavored gelatin.
Your doctor and/or the clinic where the procedure is done should have a list of banned substances in that case.
It should be noted that the “clear” in clear liquid diet doesn’t mean “see through”, but rather “free of solids”.
“Clear fluids” means liquids with a texture similar to water. Juice should be fine, along with broth and gelatin (ask about colour dyes). It is a step below “full fluids” which include easily digestible thick fluids like soup and yogurt.
If you know you’re not going to like the answer you should never ask the question. Therefore, I have never posed the question; “Gin is a clear liquid, right?”.
“Clear” as an adjective derives from the old French cler, which itself derives from Latin clarus, which originally dealt with sound (clear, or loud), but by transferred use meant things “bright” or “distinct” when viewed. The use in English goes back to the 1300s, and has always applied not just to transparency (the meaning of which you are thinking), but also “free from impurities”, the meaning being used by the medical community.
Coffee is a “clear” liquid, because although stained dark, it is not filled with impurities; that is, there are no solids floating around in it. Shine a bright enough light through it, and you can see it.