1 cup freshly pressed Asian pear juice (or regular pear juice)
1 teaspoon lemon juice
3/4 cups honey
1/4 cup sugar
1 (4-inch) sprig fresh rosemary
1 (1-inch) piece fresh ginger, peeled and cut into coins
Small grating of fresh nutmeg
Combine pear juice, lemon juice, honey, sugar, rosemary, ginger, and nutmeg in a saucepan over medium heat. Bring to a boil, then simmer on low heat for five minutes, stirring to dissolve the sugars.
Remove from heat and let stand 30 minutes. Strain the syrup through a fine-mesh strainer and discard the solids. Let syrup cool completely.
To serve, fill an eight-ounce glass halfway with ice cubes, add three tablespoons of syrup, fill with soda water, and stir.