This needs adjusting quite a lot. One slice of cucumber is t enough, plus it needs more gin and Gentian liqueur. I went with about 2 inches of cucumber, 60ml of Gin and 40ml of Suze. Then I could taste every ingredient. I also used mixed peppercorns, as each different pepper (white, black, green, pink and red) picked out a different ingredient. It gave it more taste and more oomph.
I will admit that I’m not a fan of Suze, and in this particular cocktail, it seems to me that it’s bitterness overpowers the more gentle flavour of cucumber etc. However, I found that the heat of the black pepper actually paired well with the bitterness of the Suze. But if you like Suze and bitter cocktails, then this may be more up your alley as drink on a hot summer’s day.