A sunset in a glass. The drink is clear and just the right tap to the rim makes it erupt in green, then orange hues. Even if the taste is worse than the Klingon supper you just ate, wouldn't you have to order it just for the presentation? I'm betting it was popular with the ladies. Data understood this; he made one for Troi after he lost a game of 3D chess to her (TNG: Conundrum). The flashy beverage also makes an appearance in DS9.
The inhabitants of Canton were a resourceful sorts of people. They worked hard, wrote ballads,* and created drinks that really do fit the definition of liquid bread. It's true, Mudder's Milk is more nutritious than your bottle of Guinness. It has "all the protein, vitamins and carbs of your grandma's best turkey dinner, plus 15 percent alcohol." The alcohol eventually makes the horrible taste fade away. At least, that's my guess.
*You get extra points if you can sing all of The Ballad of Jayne.
Blue Milk (aka Bantha Milk
Okay, maybe the blue milk that comes from your friendly neighborhood bantha isn't alcoholic, but look at that color! It's supposed to be very refreshing and nutritious, which is just what a young chap needs after whining his way to Tosche Station and back in the blazing Tatooine heat. Just like cow milk, bantha milk is used for ice cream and cheeses. You can visit a gourmet bantha ice cream shop on your next visit to Mos Eisley.
Though I'm sure it's not as potent as the stuff coming from the Galactica distillery, it might taste a little better. Ambrosia's not easy to find after the attack on the Twelve Colonies. Cloud Nine had it available on Colonial Day, and Ellen Tigh gave some to her husband upon their reunion (well done, Ellen, you and Saul both need more alcohol.) The liquid gold, or green as it happens, was made by the Stanford Distillery, probably with prison labor.
You'll notice by now that space beverages come in an array of vivid colors. Once your eyes get past the shocking blue of Romulan Ale, go ahead and throw some back as fast as you can. The Federation was probably just exaggerating when they made it illegal for it's potency. It didn't stop Bones from giving a bottle to Admiral Kirk for his birthday. Though at some point they did realize that maybe this kind of drink wasn't the best thing to serve at diplomatic functions. They should have stuck with Earl Grey, Hot.
Remember, don't navigate and drink at the same time. Or use the holodeck. Despite what they say, what happens on the holodeck does not stay there.