Crushed potatoes

Ingredients

• 750g new potatoes, washed and halved
• 4 cloves of garlic, peeled and bashed with the flat part of a knife or by hand
• Salt
• 4 shallots, peeled (see tip, p.147) and finely diced
• 150g olive oil
• 2 tsp wholegrain mustard
• 15g white wine vinegar
• Sea salt and black pepper
• 10g flat-leaf parsley leaves
• 10g chives
• 5g tarragon leaves