Measure out and roughly chop the fresh cilantro leaves; set aside.
1 cup fresh cilantro leaves
Peel and mince the garlic cloves; place in the blender along with cilantro, lime juice, salt, and black pepper.
2 cloves garlic, 1/4 cup lime juice, 1 teaspoon salt, 1/2 teaspoon black pepper
Blend the mixture until smooth, gradually adding olive oil if desired to achieve a slightly thinner consistency and brighter color. Continue until the mixture is fully combined and vibrant green.
1 cup fresh cilantro leaves, 2 cloves garlic, 1/4 cup lime juice, 1 teaspoon salt, 1/2 teaspoon black pepper, 1/4 cup olive oil
Transfer the marinade to a bowl or directly pour into a zip-top bag. Use a spoon or brush to coat your choice of meat or vegetables evenly.
Marinate the food for at least 10 minutes to allow flavors to meld. Then, grill or cook as desired until the meat or vegetables are tender and have a slightly charred exterior, about 5 minutes per side.