Drain the beans and rinse them with cool water in a colander. Let the excess water drain away.

Rinse and drain the parsley. Pull the parsley leaves from the stems, then chop them roughly.

Combine the rinsed beans, chopped parsley, olive oil, lemon juice, minced garlic, oregano, a pinch of salt, and some freshly cracked pepper in a bowl. Stir until everything is well mixed. Taste the beans and adjust the salt if needed. Refrigerate until ready to eat.