Put 1 tbsp of the oil and the garlic slices in a frying pan and heat to moderately low.

Gently cook, stirring often, until the garlic is just golden brown.

Remove the garlic with a slotted spoon and set aside.

Transfer the oil remaining in the pan into a small bowl and set aside to cool while you cook the beans.

Put the prepared beans in a saucepan of boiling water with a pinch of salt added.

Simmer until just cooked, but still lightly crunchy (3-5 min).

Strain in a colander and put them under the cold tap to stop further cooking. The beans should be just a little warm.

Drain well and transfer to a serving dish.

Add the remaining ½ tbsp of olive oil to the reserved oil you cooked the garlic in.

Add the red wine vinegar, pepper and sugar plus a pinch of salt.

Whisk together, taste and add more seasoning or vinegar if needed.

Pour the dressing over the beans and toss well.

Toss in the fried garlic and mint before serving.