1️⃣ Drain the beans: Place the beans in a colander and drain well.

2️⃣ Prepare the onion: Peel the onion, halve it and finely dice it.

3️⃣ Mix the dressing: In a small bowl, stir together the vinegar, oil, salt, pepper and sugar until well combined.

4️⃣ Mix everything: Place the beans and onion in a salad bowl, pour the dressing over the top and mix well.

5️⃣ Let it steep: For a more intense flavor, let the salad steep for about 30 minutes and enjoy!