Mary Berry Recipes

Home / Dinner / Classic Leek and Potato Soup

Oh, there's nothing quite like a bowl of comforting soup, is there? And when it comes to the classics, this Leek and Potato Soup truly stands out. It's a recipe that has graced many a kitchen table across Britain for generations, a testament to its simple charm and utterly delicious flavour. I do believe that sometimes the simplest ingredients, handled with a little care, can produce the most extraordinary results. This soup is just that – humble vegetables transformed into something quite magnificent.

I remember making this soup often for my own family, especially on those chillier evenings when a warm, nourishing meal was just what was needed. It's incredibly satisfying, and the gentle sweetness of the leeks paired with the earthiness of the potatoes creates a symphony of flavour that is both delicate and deeply comforting. It’s a wonderfully versatile dish too, equally at home as a light lunch with some crusty bread or as an elegant starter for a more formal gathering.

The beauty of this recipe lies in its straightforward approach. No complicated techniques, just good, honest cooking that allows the natural flavours of the ingredients to shine through. Follow these steps, and you’ll achieve a bowl of sheer perfection every time – smooth, creamy, and utterly delightful. Let’s get cooking!

Why You'll Love This Recipe

Uses readily available, economical ingredients for a budget-friendly meal.
Offers a wonderfully comforting and warming bowl, perfect for any season.
It's incredibly versatile, delicious as a light lunch or an elegant starter.

Ingredients

25g unsalted butter
1 tbsp olive oil
3 large leeks, about 600g, trimmed, washed, and thinly sliced
1 large onion, finely chopped
2 cloves garlic, crushed
750g floury potatoes (such as Maris Piper or King Edward), peeled and diced
1.2 litres hot vegetable stock
150ml full-fat milk or single cream
Salt and freshly ground black pepper, to taste
Fresh chives or parsley, finely chopped, for garnish

Equipment Needed

Large, heavy-based saucepan or deep pot • Chopping board • Sharp knife • Measuring jug • Stick blender (or food processor/regular blender) • Wooden spoon or spatula

Step-by-Step Instructions

Begin by melting the butter with the olive oil in a large, heavy-based saucepan or a deep pot over a medium heat. It’s important not to rush this stage, as gently softening the vegetables is key to the flavour.
Add the sliced leeks and chopped onion to the pan. Stir well to coat them in the butter and oil. Cover the pan and let them cook gently for about 8-10 minutes, stirring occasionally, until they are beautifully soft and translucent but not browned. This slow cooking brings out their natural sweetness.
Stir in the crushed garlic and diced potatoes. Cook for another 2-3 minutes, allowing the flavours to meld together.
Pour in the hot vegetable stock. Bring the mixture to a gentle boil, then reduce the heat, cover the pan, and simmer for 15-20 minutes, or until the potatoes are wonderfully tender when pierced with a knife.
Remove the soup from the heat. Using a stick blender, carefully blend the soup until it is smooth and creamy. If you don't have a stick blender, you can transfer it in batches to a food processor or a regular blender, being very careful with hot liquids.
Stir in the milk or single cream. This adds a lovely richness and makes the soup beautifully velvety.
Return the pan to a low heat and gently warm the soup through for a few minutes, ensuring it doesn't boil once the cream is added.
Season generously with salt and freshly ground black pepper. Taste and adjust as needed – seasoning is terribly important for bringing out the best in the ingredients.
Ladle the hot soup into warmed bowls. Garnish with a sprinkle of fresh chives or parsley, and perhaps a swirl of cream, for that extra touch of elegance. Serve immediately with some lovely crusty bread.

Perfect Substitutions

**Vegetarian stock:** If you prefer, chicken stock can be used for a richer flavour, though vegetable stock keeps it suitable for vegetarians.
**Milk/Cream:** For a dairy-free option, full-fat coconut milk or a dairy-free cream alternative can be used to maintain creaminess.
**Potatoes:** While floury potatoes are best for a creamy texture, waxy potatoes can also be used; the soup might just be slightly less thick.

Serving Suggestions

This delightful soup is simply wonderful served with a good, crusty loaf of bread, perhaps a warm baguette or some wholesome brown bread, perfect for dipping. A sprinkle of grated mature cheddar cheese on top before serving also makes a lovely addition, or a few homemade croutons for a bit of crunch. For a heartier meal, it pairs beautifully with a simple green salad. If you enjoyed this, you might also love our Hearty Chilli Con Carne and Classic Lancashire Hotpot: A Heartwarming Family Favourite.

How to Store \u0026 Reheat

Any leftover soup should be cooled completely, then transferred to an airtight container and stored in the refrigerator for up to 3 days. To reheat, gently warm the soup in a saucepan over a low heat, stirring occasionally, until piping hot. If it's too thick, you can add a splash of milk or stock to reach your desired consistency. This soup also freezes beautifully for up to 3 months; thaw overnight in the refrigerator before reheating.

Mary's Secrets to Success

My secret to truly wonderful Leek and Potato Soup lies in two key areas: firstly, take your time softening the leeks and onions. This gentle cooking coaxes out their natural sweetness, which is absolutely vital. Secondly, don't skimp on the seasoning at the end; a good pinch of salt and a generous grind of black pepper will elevate the flavours beautifully. And for that extra special touch, always warm your bowls before serving – it keeps the soup piping hot and makes for a much more enjoyable experience!

Frequently Asked Questions

Can I make this soup ahead of time?

Absolutely, my dear! This soup is one of those wonderful dishes that often tastes even better the next day as the flavours have more time to meld. Just store it in the refrigerator once completely cooled.

What kind of potatoes are best for this soup?

I always recommend a good floury potato, such as a Maris Piper or King Edward. They break down beautifully when cooked, giving the soup that lovely, creamy texture we all adore.

Can I add other vegetables to this soup?

While the classic recipe focuses on leek and potato, you could certainly add a chopped carrot or a stick of celery along with the leeks and onion for an extra layer of flavour. Just ensure they are cooked until very tender before blending.

My soup is a bit thin; how can I thicken it?

If your soup is a little thinner than you'd like, you can let it simmer gently without the lid for a few more minutes to allow some of the liquid to evaporate. Alternatively, you could mash an extra cooked potato into it, or even stir in a spoonful of cornflour mixed with a little cold water (a 'slurry') and simmer until thickened.