Baked Potato - With poultry

5 large potatoes , baked & cubed 3 tablespoons butter 3 tablespoons flour 1 (15 ounce) can chicken broth 4 cups half-and-half 2 cups milk 1 (6 ounce) jar[...]

2 large baking potatoes (about 1/2 lb/250g each) 3 ounces unsalted butter (75g) 1 lb leek , white and light green parts, sliced and rinsed well (500g) 2[...]