A double glass vessel that is both a vase and a drink glass at the same time.
An original, aesthetic way of serving and consuming drinks.
Especially fitting for couples, people on dates, etc.
When someone asks for water for their flowers, give them both that and a drink - all in one.
A tool for various catering establishments to attract people and make more money.
A nice thing to have at home for your guests, family, and yourself.
The vessel has two concentric compartments, the center one is filled up with water and cut flowers are sank in it, the peripheral one is filled up with a drink which is consumed through long, bend straws while the flowers rest in the middle compartment.
Such vessels can come in various sizes, depending on how many people will share the vase-glass and how much drink they want to consume.
Catering establishments that don't want to bother about getting flowers to put in vase-glasses and serve together with drinks, could only offer them to customers who ask to bring some water for the flowers they already brought with them. They could offer discounts, special offers, etc. for drinks served in a vase-glass.
However, for those businesses who don't mind investing more in this, it could lead to a bigger thing, one could combine different drinks/cocktails with various plant combinations in the vase and make a whole new "botanical" menu of this. A bar could partner with a nearby flower shop to achieve that. Such drinks would be more expensive for their aesthetic value and to justify the cost of plants.
Pay more to take the flowers with you after you finish the drink, if you don't want that, the staff will keep them sank somewhere and reuse them for the next customers ordering a similar combination.