You’ll see that a few cocktail recipes call for a fruit puree of some kind. You have a few options when it comes to purees. You can buy them already made up or you can make your own. Unless you are making a large volume of drinks (for say a party), I suggest you make your own. It’s really easy and the purees are fresh.

Mango Puree
2 mangos, peeled and pitted
2 tablespoons baker’s sugar
2 tablespoons water
1 teaspoon fresh lemon juice

Pear Puree
2 pears, peeled and cored
2 tablespoons baker’s sugar
2 tablespoons water
1 teaspoon fresh lemon juice

In a blender or food processor fitted with the metal blade, combine the fruit, sugar, water and lemon juice; process to a smooth puree, about 30 seconds. Add more sugar to taste. Strain through a fine metal sieve set over a bowl. Use a rubber spatula to stir and press the puree through the sieve; discard solids. Refrigerate for up to 3 days or freeze for up to 6 months.

I store my purees in those GladWare Mini Round 1/2 cup (4 oz) platic containers. They freeze well and you can label them with your type of fruit and the date. This size is perfect for making about 4 cocktails at a time.