Quick Clam Chowder

(Photo by Jason Clee) Makes about 2 quarts 3 to 4 slices bacon, cut into 1/2-inch pieces 1 large Spanish onion, diced medium, (about 2 cups) 1/4 cup flour 4 cans (6.5 ounces) minced clams, clams and juice separated 2 bottles (8 ounces each) clam juice (preferably Doxsee brand) 3 medium boiling potatoes 1 large...