Lighter Potato and Leek Soup

1 . Stage

Combine leeks and 3 tablespoons olive oil in a stockpot over medium-low heat. Saute until soft, about 15 minutes, adding more oil if needed. Sprinkle flour over leeks and mash in with a wooden spoon. Reduce heat to low and cook for 2 minutes.

2 . Stage

Slowly add 2 cups water, stirring constantly to create a roux. Slowly add 2 more cups water, stirring constantly. Stir in the remaining 2 cups water. Add bouillon cubes, sugar, chili-garlic sauce, and pepper. Increase heat to medium and stir occasionally until boiling.

3 . Stage

Add potatoes and reduce heat to a low simmer. Cook until potatoes are soft, 45 to 60 minutes, stirring every 10 minutes or so and scraping the bottom of the pot as needed. Puree soup with an immersion blender until smooth with some chunks remaining. Stir in milk to thin and heat until warmed through.