Pour leftover wine into ice cube trays and freeze. Use these wine cubes later in cooking, particularly in recipes that call for wine, to avoid wasting the frozen wine.
Blend frozen wine with fresh fruits to create wine slushies. Add some sugar or simple syrup for sweetness, and you have a refreshing frozen treat.
Mix frozen wine with fruit juices and fruit chunks, then pour the mixture into popsicle molds. Freeze until solid for a delightful frozen sangria popsicle.
Thaw frozen wine and use it to make a flavorful reduction sauce. This can be a great addition to dishes like steak or chicken.
Scrape the frozen wine with a fork to create a granita. Serve the wine granita in glasses for a slushy, semi-frozen dessert.
Use frozen wine to marinate fresh fruit. The fruit will absorb the wine as it thaws, creating a tasty and boozy snack.
Use frozen wine cubes to chill other beverages without diluting them. This works well for drinks like sangria or iced tea.
If the taste is still acceptable after freezing, use the wine in cooking or deglazing pans. The altered flavor might not be noticeable in certain recipes.