Last January, one of the first things my son-in-law wanted to know was if I’d found a “boy toy” after spending a week at Lavey-les-Bains, following our Christmas holiday in Burgundy, where half of us now live. The other half lives in Australia. The renowned Swiss thermal waters lie under the Dents du Midi that rise above Lac Léman in the Swiss canton of Valais like four, glistening white, enamel incisors.