Even a fresh drink still asks you to just believe the menu board.

Most coffee shops do make your drink fresh, to be fair, and plenty use a clear cup too. But a cup you can see through only shows you the finished drink, not how it got there: how much syrup went in, what's really in that syrup, whether it matches the menu board the same way it did last time.
We didn't want to ask you to just take our word for it.

So we make it in front of you, then seal it before you even taste it.

Plenty of places serve cold drinks in a clear cup. That part's not new. What's different at MEYÜ is the moment it gets sealed: every drink is made to order at the counter, then goes straight into an automatic can sealer that presses an airtight lid across the top in seconds, right there in front of you, not capped by hand out of sight, not batched hours earlier.
If we're going to say "real ingredients, no shortcuts," we wanted a process that couldn't let us cut corners even if we tried, not just a container that happens to be see-through.
MEYÜ
The name reads "from me to yu": a drink handed to you by someone, not something. The two dots over the Ü aren't an accent. They're the smallest reminder that a person made this, on purpose, for you.

What "Let's be transparent." actually means

No pre-batching

Nothing is made until you order it. What you see is what just happened.

Sealed in the can

Every drink is capped in front of you, not somewhere out of sight.

No guesswork

We'd rather over-explain an ingredient than have you guess wrong.