To make vanilla extract, just place 8 or 10 vanilla beans (cut them open first) in a 1 quart jar and fill the jar with vodka. Let it sit until it's dark brown and lovely. I really love vanilla, so I tend to go heavy on the vanilla beans. And whenever you use the seeds from a vanilla bean, pop the empty bean inside the jar of vanilla. Even used beans will help flavor the extract. Nothing ever goes to waste.
And NEVER buy vanilla beans from a grocery store, they are grossly overpriced. This is where I buy mine.
http://www.organic-vanilla.com/servlet/StoreFront
Here's the recipe for truffles, they are very easy to make.
8 ounces good quality milk chocolate, chopped
8 ounces good quality semisweet chocolate, chopped
1 cup heavy cream
2 tablespoons strong brewed coffee, cooled
1 teaspoon vanilla
Powdered sugar
Place chopped chocolate in a large bowl, set aside.
Pour heavy cream into a small pot. Heat over medium heat, stirring often, just until steam begins to rise from the cream and a line of bubbles forms around the edges of the pot. Remove from heat immediately and pour overtop of chocolate. Stir the coffee and vanilla into the chocolate mixture with a wooden spoon. Continue stirring until chocolate is completely melted and mixture is smooth. If lumps remain, place bowl in microwave for 30 seconds to finish melting the chocolate. Place bowl in fridge for 2 hours until chocolate is firm.
Line a large baking sheet with aluminum foil.
Scoop rounded teaspoonfuls of the chocolate onto the prepared baking sheet. Place baking sheet in fridge for about an hour, until the truffles are firm. Then roll the truffles into balls and roll them in the powdered sugar.
Serve immediately by placing them in mini muffin tin liners and allowing them to come to room temperature. They will keep in the fridge in an airtight container for 2 to 3 weeks, or they can be frozen for several months. They are best served closer to room temperature.