How to Make Homemade Fruit Liqueur --- I've come up with a quick and easy technique that results in the most intense fresh fruity flavor, and it's ready to drink in 24 hours --- cheers!
Start with clean fruit. Depending on what fruit you are using, hull the berries, pit the stone fruit, or trim rough ends from the rhubarb. Do not peel stone fruit, much flavor and color comes from the skins.
Chop the fruit into bite sized pieces and add to a saucepan, along with the sugar. Add 1/4 cup water, and bring to a boil, stirring to dissolve the sugar. If your fruit is dry you may need to add a bit more water. Cook for about 5 minutes, just enough to soften the fruit.
Puree the fruit using an immersion blender, a regular blender, or food processor.
Add the fruit puree to the vodka and give it a stir. Let sit on the counter, covered, for 24 hours.
Strain through a nut bag, or several layers of cheesecloth, squeezing to get all the liquid out. Discard the solids.
Keep the liqueur in the refrigerator until needed. Note: these liqueurs need to be refrigerated because of the fresh fruit component, and should be consumed within 2 weeks.
Notes
There's no need to buy expensive vodka for this, use the cheap stuff, because all the flavor will come from the fruit.
You can use almost any fruit, I think tropical fruit like guava or pineapple would be fun to try, and while I wouldn't touch a store bought blueberry vodka, I'm excited to make my own, it's next on my list.
A nut bag is the perfect tool for this job...it's a fine mesh bag made for straining out solids when making nut milks, and it works great for this, too. You can find them online here, the ones I like are a very fine nylon mesh that outlasts cloth and rinses clean. I originally tried straining my liqueur through coffee filters, but it took way too long, and coffee filters are so delicate they can split. Cheesecloth is messy and not quite fine enough.
You don't technically need the sugar, but I think it helps to bring out the flavor of the fruit.
Try mixing herbal notes with these liqueurs, rosemary, thyme, sage, and lavender would all go well.