La Terrasse steps in at lunchtime and on Wednesday evening (when the three-star La Vague d'Or is closed) as the restaurant of Le Cheval Blanc hotel. In the shade of umbrella pines, looking out over the Bay of Saint Tropez, Arnaud Donckele and his team conjure up Mediterranean cuisine drawing on distinct Provençal influences. The premium-quality ingredients are prepared with a great sense of finesse and rigour: porcini tarte fine; lobster tail grilled in its shell, lobster roe sabayon; rabbit pie, sweetbreads and foie gras. Outstanding and wide-ranging selection of wines. The quintessence of French art de vivre…