Make the dressing by combining the lemon juice, olive oil, salt and pepper in a small container with a lid.

Shake vigorously until combined and set aside.

Drain the beans into a colander and rinse with cold water. Let sit for 5 minutes and then transfer to a bowl.

Add the diced tomatoes, onion, chili, green pepper, garlic, radish and cilantro to the beans.

Season well with salt and black pepper.

Give the salad a few turns with a wooden spoon.

Add some of the dressing and toss gently.

Taste and add more dressing if you think it needs it and adjust the seasoning.

Toss again and serve at once.