Start by finely chopping 1 head of fresh garlic, ensuring to remove tough skins. In a small mixing bowl, add the garlic, 2 tablespoons of chopped flat-leaf parsley, 2 tablespoons of white vinegar, and 1.5 teaspoons of coarse Kosher salt. Stir gently until well combined.

Spread the garlic mixture evenly across the bottom of the bowl to allow flavors to meld.

Slowly pour in 0.5 to 0.75 cup of extra-virgin olive oil over the mixture, ensuring the garlic is fully submerged.

Cover the bowl with plastic wrap or a lid and let the garlic relish marinate at room temperature for at least 3 to 4 hours.

After marinating, give the relish a quick stir and taste. Adjust flavor if necessary by adding more salt or fresh lemon juice.

Pour into an airtight container if not used immediately. For best results, enjoy within 5 days.