Bittersweet gentian is the prevalent flavour (hence the 'Suzie' name), toned down by bianco vermouth and freshened with pink grapefruit over a fortifying...
We thought this could be encouraged into a dance between sweet and dry. So we added 10ml fino sherry and reduced the sugar syrup to 5ml. It's a very pretty and elegant cocktail. I know a boozy Suzie and she is pretty and elegant too.
The second time I made this I doubled the grapefruit to 15ml and increased the egg to 10ml. I might play around with it further, bit better think a splash more grapefruit worked, maybe.