1 pound broccolie ( trimmed, stalkspeeled, florets and stalks cut into small pieces)
1 small potato (about 4 ounces) (peeled and cut into 1/4-inch cubes)
1 cup sliced leeks (white and light green parts only)
4 cups good-quality chicken stock
1/3 cup heavy (whipping) cream
1/2 teaspoon ground white pepper (or to taste)
  Kosher salt