I think this is it, the last remaining pieces of summer.
This cocktail is called The Sashito, and I found at @stylemepretty ages ago, and it has followed me since.
2 chunks of watermelon
3 cl Cointreau
3 cl Campari
4 cl lemon juice
3 cl simple syrup
5 dashes of Angostura
And I also added a lot of flowers from my mothers garden. Maybe not very edible, but not that poisonous either. At the very least you'll survive.