To poach the garlic, submerge the cloves in olive oil in a small pan until completely covered. Cook on low heat until the garlic is soft, about 30 minutes. This pizza is time-consuming and requires planning ahead. If you do not have an active sourdough starter or the time to ferment the dough, use 1 1/2 pounds store-bought pizza dough. Press it into an oiled 10-by-14-inch pan and proceed with the recipe as written. Oil the pan generously so the bottom of the dough fries slightly as it bakes. That is what creates the crispy edge.