Chipotle Leek and Potato Soup

Name: Chipotle Leek and Potato Soup
Ingredients: 0.25 cup butter; 2 large leeks, white and light green parts, chopped, or more to taste; salt to taste; 1 red bell pepper, diced; 4 cloves garlic, minced, or more to taste; 1 chipotle pepper in adobo, minced, or more to taste; 1 pinch ground cumin, or to taste; 1 pinch dried thyme, or to taste; white pepper to taste; 4 cups vegetable broth; 3 Yukon Gold potatoes, diced; 0.5 cup milk; 0.25 cup heavy whipping cream