The culinary world can often feel like a maze brimming with tantalizing treats and infinite choices. Amid this sea of indulgences, every so often, a star rises and shines brightly above the rest.

There are three different types of dessert people: cake people, custard people and pastry people. I’m very much a custard person, here for silky, creamy fillings — and tiramisù delivers every time.

Since returning from a trip to Italy this past October, I can’t stop thinking about the tiramisu I encountered on dessert menus throughout Tuscany. Each one was a study in elegance, with layers so ...