Made with equal parts gin, rosso vermouth and dry vermouth the result is almost sherry-like and suits the aperitivo moment. However, if you want that spirituous...
Hmm - it seems blanco is sweeter than rosso so 2:1:1 Gin:Dry:Blanco is still pretty sweet so the Three Two One Martini looks to be a better option. Still tasty, just not "perfect"...