An Applejack, yes. It's quite ambitious. The proportions are:
2 x apple vodka
1 x Macallan amber whisky liqueur
1 x Calvados
1 x lime juice
3 x apple lambic (try Lindeman's Pomme, for example)
You also need a 1 thin apple slice, and some ice.
Fill a shaker with ice. Add the ingredients (but not the lambic or the apple slice) and shake well.
Strain it out into a chilled martini glass, and then finally stir in the lambic and garnish with the apple slice.
Be interested to hear how it goes.