This was a mainstay in the Super Vega kitchen, used in many different ways as a way to add a flavor bomb to many dishes. Just make sure you only use the skin of the preserved lemons, not the soft fleshy bits....several of our cooks didn't get the memo and we were left with unusable, super tart labneh. I think this is maybe where I got my "labneh lover" reputation.
1 cup labneh
1 large preserved lemon, skin only, small diced
1 teaspoon fresh ground black pepper
Mix everything together well and allow to sit for about 30 minutes before using if you can for the flavors to come together.