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This comforting potato leek soup is a wholesome, homemade favorite packed with hearty vegetables and a rich, creamy base. Perfect for a weeknight dinner or a cozy weekend meal, it combines simple ingredients with robust flavors. Whether you’re looking for an easy recipe to impress guests or a nutritious option for family meals, this soup delivers satisfying results. It’s versatile, allowing for adjustments to fit dietary preferences, and can be made ahead for meal prep convenience.

Ingredients

2 cups diced leeks (about 4 leeks)
3 cloves garlic, minced
2 tablespoons butter
1 tablespoon olive oil
1 stick celery, diced
½ cup diced carrots
4 large Russet potatoes (about 2 lbs.), peeled and cubed
6 cups chicken broth, divided
1 bay leaf
¼ teaspoon ground sage
1 teaspoon soy sauce
⅓ cup cream or ½ cup half-and-half
2 tablespoons sour cream
Salt and pepper to taste

Optional Additions: White wine, cheddar cheese, Parmesan, bacon, or thyme (see Variations and Substitutions below).

Instructions

Prepare the Leeks
- Remove the dark green, leafy tops and bulbs from the leeks, keeping only the light green and white sections.
- Wash thoroughly to remove dirt, pat dry, and dice. Set aside.
Sauté the Vegetables
- In a 3 ½ to 4-quart soup pot, heat 2 tablespoons of butter and 1 tablespoon of olive oil over medium heat.
- Add the diced leeks, carrots, and celery. Cook for about 5 minutes until softened. Stir in minced garlic and cook for another minute.
Cook the Potatoes
- Add 5 cups of chicken broth to the pot, reserving the 6th cup to adjust consistency later if needed.
- Stir in the bay leaf, ground sage, and soy sauce.
- Add the cubed potatoes to the broth and bring to a gentle boil. Cover partially and cook for about 20 minutes or until the potatoes are fork-tender.
Blend the Soup
- Remove the bay leaf. Use an immersion blender to puree the soup until smooth. Alternatively, transfer the soup to a blender in batches and blend.
Finish and Serve
- Reduce heat to low and stir in cream (or half-and-half) and sour cream.
- Add up to 1 additional cup of chicken broth if a thinner consistency is desired.
- Season with salt and pepper to taste (suggested: ½ teaspoon salt and ¼ teaspoon black pepper).
- Optional: Stir in up to 1 cup shredded cheddar cheese off the heat, or garnish with Parmesan before serving.
- Serve warm and enjoy!

Pro Tip: Add the rind from a block of Parmesan or Romano to the soup while the potatoes cook. Remove any remaining rind before blending for an extra depth of flavor. Avoid using waxed rinds.

Why You’ll Love This Recipe

Creamy and Comforting: Perfect for cozy evenings, this soup is rich and satisfying.
Customizable: Adjust the flavors and texture to your liking with optional additions and substitutions.
Nutritious: Packed with vegetables and hearty potatoes, this soup is both delicious and nourishing.
Easy to Make: Straightforward steps make it accessible for cooks of all levels.

Tips

Leek Cleaning: Slice the leeks lengthwise and rinse thoroughly to remove grit and dirt.
Blending: Use an immersion blender for convenience or a countertop blender for a silky-smooth texture.
Avoid Overheating Dairy: Add cream and sour cream over low heat to prevent curdling.
Make Ahead: This soup tastes even better the next day. Store in an airtight container and refrigerate for up to 3 days.

Variations and Substitutions

Cheese: Stir in shredded cheddar, Parmesan, or Gruyère for a cheesy twist.
Meat: Add crumbled cooked bacon or diced ham for added protein.
Herbs: Enhance the flavor with thyme, parsley, or chives.
Vegetarian: Substitute chicken broth with vegetable broth for a vegetarian version.
White Wine: Deglaze the pot with ¼ cup white wine after sautéing vegetables for a subtle acidity.

FAQs

Can I use a different type of potato? Yes, Yukon Gold potatoes work well for a creamier texture, though Russet potatoes create a classic consistency.

How do I store leftovers? Store in an airtight container in the refrigerator for up to 3 days. Reheat gently over low heat.

Can I freeze this soup? Yes, but avoid adding dairy before freezing. Freeze the base soup, then stir in cream and sour cream after reheating.

Serving Suggestions

Pair with crusty bread or a baguette for dipping.
Serve alongside a crisp green salad for a light meal.
Garnish with fresh herbs, crumbled bacon, or shredded cheese for an elevated presentation.

Enjoy this warm and hearty potato leek soup, perfect for any occasion!