Gently heat milk in a small saucepan, just until barely simmering. Remove and keep covered.
In a separate saucepan, melt butter. When foam subsides, add flour and stir until smooth. Cook for 1 to 2 minutes, stirring. Do not allow flour to color. Gradually add the warm milk, whisking to combine. Add the salt and cayenne and increase the heat to medium. Cook the mixture, whisking continuously, until the sauce comes to a boil and is thickened. Remove from heat and add 10 of the roasted garlic cloves. Pour the hot mixture into a blender, cover tightly, and process until smooth. Transfer to a small bowl and cool slightly, placing a piece of plastic wrap directly on the surface.
Place a pizza stone in the oven and preheat to 500 degrees F.
Sprinkle about 2 tablespoons of the yellow cornmeal on a baker's peel or baking sheet. Place the rolled out pizza dough circle on the prepared baker's peel or baking sheet.
Spread the cooled sauce over pizza dough, leaving a 3/4-inch border. Place sliced mozzarella on top of the sauce. Sprinkle the remaining roasted garlic cloves (whole) over the cheese and top with the grated fontina. Bake the pizza for 8 to 10 minutes, or until the crust is golden and cheese is melted and bubbly and golden brown in spots. Remove from the oven and sprinkle chopped herbs over the top. †Serve immediately.
Yield: 1 large 15-inch pizza, serving 4 to 6