Best Potato Leek Soup
Potato leek soup is a popular soup in Welsh and French cuisine. It’s made up of mainly fresh potatoes and leeks. And even though it’s smooth and almost sauce-like in consistency, it’s still hearty and filling since it is potatoes that build up the base of the soup (and they have a moderate amount of carbs, starchy fiber, and protein – specifically proteinase inhibitor 2). It is similar to the typical potato soups found in the U.S. and elsewhere but rather it’s pureed instead of chunky, and doesn’t included meat. Plus it has a chicken broth base and not milk. Then another main difference is of course the use of leeks versus commonly found yellow onions.
Using the Leek Greens
Usually in potato leek soup recipes you’ll see just the white and light green portions of leeks are used but that seems quite wasteful of something that could have otherwise nicely flavored the soup. This is done because if you add those darker green portions to the soup and puree them in at the end they would turn the soup a not-so-appetizing green color once blended in. So I’ve come up with a solution for them to at least season the soup by layering and wrapping those leaves in kitchen twine, submerging them into the soup to season it as it simmers, and then they are removed at the end before blending. Though it’s a step you could skip I highly recommend it for the extra depth of flavor it gives the soup. Plus it just feels better than tossing at least a half portion of the leeks straight into the trash.
The Helpful Tool to Make It
My preferred method to process this soup is to use an immersion blender. It’s an inexpensive kitchen tool that comes in quite handy for several different applications (sauces, soups, batters, whipping cream, making milkshakes, etc). Here it avoids the need of transferring soup to a blender. Plus it’s a hassle to have to work in batches to puree the soup in a countertop blender. If you have an immersion blender you can just puree the entire batch of soup right in the pot it was cooked in. Who doesn’t love less clean up? And since this is a very smooth soup I recommend serving with some toasted baguette slices (or homemade croutons) to have a little bit of textural contrast to the soup. The pairing works beautifully.
Potato Leek Soup Recipe Ingredients
2 lbs leeks (about 3 large) 2 Tbsp butter Salt and freshly ground black pepper 1.5 tsp minced garlic (1 large clove) 2/3 cup dry white wine, such as Sauvignon Blanc 6 cups low-sodium chicken broth 1 3/4 lbs. Russet Potatoes, peeled and chopped into chunks about 1-inch thick 1 large thyme sprig 2 bay leaves (fresh or dried) 1/3 cup sour cream or creme fraiche 1/3 cup heavy cream 2 Tbsp minced chives (optional)
How to Prepare Leeks for the Soup
Trim away stringy roots. Cut the leeks between the white and light green portion and the dark green portion. Slice in half through the length of every portion with a chef’s knife. Rinse both on the exterior of the leeks as well as rinsing well between interior layers to remove dirt and debris. From there turn on their flat cut side onto the cutting board and cut those white and light green portions into 1/4-inch slices (you should have about 6 cups). Layer together the remaining dark greens of the leaks (upper area of leaves) into 2 snug portions then wrap and tie with kitchen twine (refer to photo below).
How to Make Potato Leek Soup
Helpful Tips
Keep it chunky: This soup can also be served chunky without any blending at all. It really just comes down to personal preference. Using a countertop blender: If you want a smooth soup and don’t have an immersion blender it can instead be blended in batches in a countertop blender. If doing so don’t fill blender jar more than halfway full. Also remove lids insert and cover with a folded kitchen cloth when blending to prevent heat build up and bursting. Substitutes: In a pinch Yukon gold or red potatoes can be substituted for russet potatoes. If you prefer not to cook with alcohol you can use more chicken broth in place of white wine. Buttermilk will work for sour cream. Just include 1 extra tablespoon of heavy cream for more richness.
Possible Variations
Serve with toasted baguette slices for dipping: Brush baguette slices lightly with olive oil then rub with a halved garlic clove. From there toast in a countertop toaster oven or on a baking sheet set underneath the broiler of an oven until golden brown and crisp. Add meat: If you’d like the soup can be finished with some cooked bacon, ham or pancetta. Make it vegan: For a vegan option use olive oil in place of butter. Replace heavy cream and sour cream with coconut cream and a few teaspoons lemon juice to imitate the same tang.
More Comforting Soup Recipes to Try
Butternut Squash Soup Cauliflower Soup French Onion Soup Potato Soup Tomato Soup
