Anise vodka: Add 2 whole star anise and 1 tablespoon anise seeds to vodka.
Caraway vodka: Add 2 tablespoons caraway seeds to vodka.
Ginger vodka: Add 6 quarter-size slices peeled fresh ginger to vodka with 1 teaspoon grated fresh ginger.
Hot chili vodka: Halve 1 rinsed fresh habanero or other hot chili lengthwise through stem; add half the chili to vodka. Habaneros are extremely hot; if you are sensitive to heat, substitute a milder chili, such as jalapeño.
Lemon-coriander vodka: Lightly crush 1 tablespoon coriander seeds in a mortar or with the bottom of a heavy glass and add to vodka with 1 tablespoon slivered lemon peel.
Peppercorn vodka: Lightly crush 1 teaspoon single- or multi-colored peppercorns in a mortar or with the bottom of a heavy glass; add to vodka.
Saffron-orange vodka: Add 1/8 teaspoon loosely packed saffron threads and 1 tablespoon slivered orange peel to vodka.