For the ricotta pancakes: Whisk together the flour, sugar, and baking powder in a large bowl. Whisk in the milk, egg, and zest until incorporated. Using a rubber spatula, gently fold in the ricotta.
Preheat a large, well-seasoned cast-iron or nonstick skillet over medium-high heat and add enough butter just to coat. When a drop of water thrown into the skillet bounces across the surface vigorously, add heaping tablespoon-sized dollops of batter, allowing enough room between each for them to spread slightly. Cook until the bubbles begin to pop and hollow out on the surface of the pancakes, adjusting the heat as necessary, about 2 minutes. Flip and cook for about 1 minute more.
Serve with Lemon Syrup.
In a small saucepan, add the sugar, water, lemon zest, lemon juice, and salt.
Bring to a boil and then simmer for 10 minutes. Let cool and strain.