Is it cheese…or is it cake? Or is it cheesecake? Baked lemon ricotta is a modern creation produced by a small family enterprise in Puglia, but there’s plenty of tradition behind it. In Sicily and Puglia, shepherds long ago figured out that they could bake their ricotta in their wood-burning oven and extend its lifespan. Thirty-five years ago, the Donvito family took the practice in a new direction, creating a line of sweet, sliceable baked ricottas flavored with lemon, coffee, cocoa and pistachio. The lemon version—the bestseller by far—turns up at American cheese counters occasionally and I’ve been eyeing it, but not trying it, for years.