My immediate reaction after reading this piece is why not just have them drink it? Talk is cheap.
Other problems then arise like is it safe? And who are these ppl offering me this drink? Will I be poisoned? Sadly, no amount of chit-chat will convince me its safe unless they are part of a giant, reputable company.
Again, I’m not really into talking. If the idea is good, let the person try the product and why a working prototype is always better than pictures and words.