Shelf-stable indefinitely: Use an 80-proof (or higher) clear, neutral spirit, as alcohol prevents spoilage. While potency may slowly decline over years, it’s still safe to use.
Instructions
Prepare the fruit: Choose fresh, fragrant citrus with no off smell.
Wash the oranges or the lemons thoroughly in warm water with mild soap to remove any wax or dirt, then pat them dry.
Remove the zest: Using a vegetable peeler or a zester, carefully remove only the top, colored layer of the peel. It is crucial to leave behind as much of the white pith as possible, as it will make the extract bitter.
Combine ingredients: Place the orange and lemon peels into the clean glass jar. Pour the vodka over the peels, ensuring they are completely submerged.
Infuse: Seal the jar tightly with the lid. Store the jar in a cool, dark place, such as a pantry or cabinet.
Steep and shake: Let the mixture steep for at least 4 to 8 weeks, but longer is better for a stronger flavor. Shake the jar gently every few days or at least once a week to help the infusion process. The liquid will likely take on a slight yellow/orange tint.
Strain and store: Once you are satisfied with the aroma and flavor intensity, strain the liquid through a fine-mesh sieve or cheesecloth into a new, clean bottle. The peels can be discarded. Label your new extract and store it in a cool, dark place. The extract will last indefinitely. Use dark glass bottles (amber or cobalt) and store in a cool, dark place. This protects from light that can degrade flavor.
Add zest later to refresh the extract: top off with fresh peels and dilute with more vodka if needed.
Add a drop or two directly to your steeped tea and stir well.
How to Use Extracts in Yogurt
Start Small: Begin with 2-3 drops per cup of yogurt and adjust to taste, as extracts are potent.
Flavor Plain Yogurt: Stir extracts into plain yogurt (Greek or regular) to add flavor and scent without affecting texture.
Combine with Sweeteners: Add honey, maple syrup, or agave to balance the tanginess of the yogurt and the intensity of the extract.
Consider Heat (Optional): While you can use extracts cold, gently warming recipes that include extracts (like in a baked yogurt dish) helps the alcohol flavor dissipate and enhances the overall flavor, say this Amazon Q&A and this Reddit thread.
Why It Works
Alcohol Base: Many extracts use alcohol (like vodka) as a solvent to capture flavors, and this doesn’t negatively impact finished yogurt’s consistency.
Versatility: Extracts are used in many dairy applications, including yogurt, ice cream, and milkshakes.
Use your homemade citrus extract in baked goods, frostings, or glazes. Generally, 1/4 teaspoon of extract can replace 2 teaspoons of fresh zest in recipes.