Put the sourdough starter, flours and seasonings for the pizza dough into the bowl of a stand mixer or large bowl. Mix the ingredients together then knead for 4 minutes (mixer) or 10 minutes (by hand). Put a little oil in a bowl and let the dough rise for about an hour.
Roasted Garlic
Separate the garlic cloves but do not peel them. Put them in a cast iron garlic roaster and pour oil on them.
Roast them at 350 °F (177 °C) until they have softened inside.
Let the garlic cool on the counter until they are cool enough to touch.
Squeeze the garlic into a bowl from the bottom of the clove.
Sauce
In a small pan, mix the sour cream, roasted garlic, garlic base and black pepper.
Assembly
Increase the oven temperature to 500 °F (260 °C)
Roll the pizza dough out to the desired size.
Put the sauce on the pizza and spread it out. Leave the last inch uncovered.
Put the pear slices artfully all over the pizza sauce.
Sprinkle the blue cheese crumbles over the pears.
Roll up the sides of the crust.
Sprinkle the pizza cheese over the blue cheese.
Bake the pizza at 500 °F (260 °C) until the edges of the crust have browned, about 15-20 minutes,.
Let the pizza cool for about 10 minutes before slicing.
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