Seasonal and costly but a splurge you won’t regret, the cheese pictured at right is luscious beyond words. I’d like to call it Vacherin Mont d’Or but I can’t. The official name is Petit Vaccarinus, which sounds like a condition that requires antibiotics. But aficionados will recognize it as a Vacherin twin, identical to that sought-after Swiss cow’s milk cheese in almost every way that matters.