What's the best cocktail you've ever had from a recipe on a bottle? (Or other marketing material)

For me it's the Jungle Bird recipe on the back of Hamilton pot still black, which is absolutely perfect:

• 1.5oz rum
• 1.5oz pineapple juice
• 0.5oz lime juice
• 0.75oz Campari
• 0.5oz "sugar syrup" (I use 2:1 turbinado syrup)

Shaken over ice and served in a double old fashioned glass (the recipe says nothing about ice for server; I use one big cube from a Glacio spherical mold)