Free legal advice is seldom worth more than how much you pay for it.
Although I think I know what you're asking, your question about protecting the recipe is being misinterpreted as a question about publication. Nevertheless as I understand it, the other posters are right. Other than by keeping it secret, you can't protect your formula from anyone who cares to duplicate it. Yes, that even includes someone cloning your drink in order to sell it.
For instance, if you could deduce the formula for Coca Cola, you'd be free to make, bottle and market it without paying Coca Cola a cent. Just as long as you didn't "confuse" purchasers by mentioning Coca Cola's name! For instance, if you manufactured a cigarette which tasted some like a Coke, and called "Smoke-a-Cola," you'd probably be in trouble.
Get a consultation with a lawyer, who does substantial work in the "nutrition," food-production and start-up areas. Your local bar association can probably give you referrals if you can't find an attorney on your own.
Good luck with your project,