Wash the leaf blades thoroughly under cold running water. Spread the leaves on paper towels and pat them completely dry. Any residual surface water will steam inside the blender, causing the oil to turn cloudy and significantly shortening its shelf life.
Tear or cut away the tough center ribs and stems from the fig leaves.
Once completely dry, coarsely chop the leaves into manageable pieces.
Measure 300 g of neutral sunflower oil into a small saucepan and place it over medium-low heat. Warm the oil until it reaches 60°C (140°F) on an instant-read digital thermometer. Remove the saucepan from the stove immediately once it hits temperature. Starting with warm oil reduces the required blending time in high-shear blenders, preserving the top aromatic notes of the fig leaf.
Place the coarsely chopped fig leaves into the Vitamix container and pour the 60°C sunflower oil directly over them. Secure the lid tightly. Start the blender on speed 1, then rapidly ramp up to maximum speed (Variable 10 / High). Blend at full power for approximately 3 to 4 minutes as the high-shear friction breaks down the leaf tissues and transfers chlorophyll and aromatics into the oil.
Pause the blender after 3 minutes to insert an instant-read thermometer into the mixture. Resume blending briefly until the friction brings the oil temperature to 85°C–90°C (185°F–194°F). Stopping at this temperature threshold extracts deep color and aroma without scorching the delicate green flavor compounds or driving the oil up to 100°C.
Pour the hot, deep-green oil mixture through a fine-mesh sieve lined with cheesecloth, a nut milk bag, or a specialized oil-filtering cloth set over a clean stainless steel bowl. Allow the liquid to pass through naturally under gravity without pressing down on the leaf pulp, as pressing forces micro-particles through the cloth and compromises clarity.
Place the metal bowl containing the filtered oil into a larger basin filled with ice water. Stir the oil continuously for 2 to 3 minutes until it drops to room temperature. This rapid cooling process locks in the brilliant emerald green color by setting the chlorophyll structure and halting thermal breakdown.
Transfer the chilled fig leaf oil into airtight dark glass dropper bottles or vacuum-seal freezer bags. Store the oil in the refrigerator if using within a few days, or freeze in 50 g portions for 3 to 6 months without losing color or fragrance.