Preparation 5 minutes, cooking 5 minutes.
Cook fine green beans in salted water along with a whole clove of garlic for 2-3 minutes. Personally, I like them crispy.
Once they have reached the desired consistency, plunge them into a bowl containing ice water or otherwise very cold so as to stop the cooking and retain their color.
When ready to serve, heat them for a moment in a frying pan with a drizzle of olive oil, season with salt, add a generous sprinkling of fresh oregano and pepper.