Corn Chowder with butter

4 ounces bacon , sliced and cut into 1 inch pieces 2 tablespoons unsalted butter 2 cups onions , chopped 2 tablespoons all-purpose flour 4 cups canned chicken[...]

2 tablespoons butter 4 scallions , white bulbs and green tops chopped and reserved separately 1 red bell pepper , chopped 2 celery ribs , chopped 1 lb boiling[...]