This cocktail is a rummy twist on a French Martini, which is one of my favorite drinks - it's classic and fancy, but easy to make, and it's no issue to keep the ingredients on hand. When I'm not sure what to make, I make a French Martini... or if I have rum, this fruity, tropical version.
While I always recommend fresh juice when possible, I realize that most people (myself included) don't have juicers at home, nor the funds/inclination to pay excessive dollars for fresh squeezed at the store (I'm looking at you, Whole Foods). In many cases, I use quality bottled juice- emphasis on quality.
For pineapple juice, small cans are better than bottles for several reasons, including price, taste, and shelf life. There's a bulk foods store in my neighborhood that sells them in packs of 24 8-oz cans for less than $15, so I always have them on hand. They keep forever and I waste less since one can usually covers two cocktails.
When I say things like this I'm very aware in the back of my head that most people don't buy cocktail supplies in bulk, and probably use their extra storage for things like baby food or cleaning supplies, but hey - this is the life I chose. I'm the type of person that has a cupboard dedicated solely to specialty straws and single linen napkins.
Blackberry Rum Punch - makes one drink
2 oz white rum
1/2 oz Chambord
4 oz pineapple juice
Squeeze of lime
Top with Raspberry Lime Soda Water
Lightly muddle two blackberries in a cocktail shaker with rum. pineapple juice, Chambord and lime. Lightly shake and double-strain into a rocks glass over ice. Top with soda water to taste and garnish with lime slice and berries.