In a large saucepan, heat 3 tablespoons of the olive oil. Add the garlic and bay leaves and cook over moderately high heat until fragrant but not browned, about 1 minute. Add the wine and bring to a boil. Add the clams, cover and steam until they start to open, about 4 minutes. Using tongs, transfer each clam as it opens to a bowl. Pour the cooking liquid into a glass measuring cup, stopping before you reach the grit at the bottom. Remove the clams from their shells and cover.