Mary Berry’s leek and potato soup is a creamy British classic: soft leeks, floury potatoes and hot stock blended smooth, finished with single cream and lemon. Proper comfort food.
Key takeaways
- Sweat leeks and onion gently for 10 minutes; never brown them.
- Use Maris Piper potatoes for the silkiest texture.
- Blend until smooth, then stir cream in off the boil.
- Prep 10 minutes, cook 25 minutes, serves 4.
- Nutmeg and lemon juice lift the flavour at the end.
What Makes Mary Berry’s Leek and Potato Soup Special?
The secret is patience at the start: leeks and onion sweated low and slow in butter build a sweet, mellow base. A little nutmeg and lemon juice keep it bright rather than stodgy, and the cream goes in at the very end so it never splits.
Ingredients
- 3 leeks (about 250g), trimmed and sliced
- 1 onion, sliced
- 25g butter
- 500g Maris Piper potatoes, peeled and thinly sliced
- 1.2 litres hot chicken or vegetable stock
- 150ml single cream
- 1 tsp lemon juice
- A pinch of grated nutmeg
- Salt and freshly ground black pepper
- Chopped chives or parsley, to garnish
Method
- Rinse sliced leeks well to remove trapped grit.
- Melt the butter in a large saucepan over medium heat.
- Add leeks and onion, cover and sweat for 10 minutes until soft but not browned.
- Add potatoes, pour in the hot stock, season with salt, pepper and nutmeg.
- Bring to the boil, then simmer 10 to 12 minutes until potatoes break apart.
- Blend until smooth with a stick blender.
- Stir in the cream and lemon juice off the heat; do not boil.
- Taste, adjust seasoning, and serve with herbs on top.
Which Potatoes Are Best for Leek and Potato Soup?
Floury potatoes such as Maris Piper or King Edward break down into the creamiest soup. Waxy potatoes hold their shape and give a grainier result, so save those for salads and roasting.
Easy Variations
For a lighter version, swap the cream for whole milk or skip it entirely and add an extra potato for body. A vegan leek and potato soup works well too: use olive oil instead of butter, vegetable stock, and finish with a swirl of oat cream.
To serve it cold as vichyssoise, chill the blended soup thoroughly and thin with a little extra stock; garnish with chives and serve in chilled bowls. For extra depth, add a bay leaf with the stock and fish it out before blending, or stir through a handful of grated cheddar at the end for a cheese-and-leek twist.
Can You Freeze Leek and Potato Soup?
Yes, for up to 3 months. Cool completely, portion into freezer bags or tubs, and freeze. For the best texture, add the cream after reheating rather than before freezing, as dairy can separate. Thaw overnight in the fridge and reheat until piping hot, stirring well.
How Do You Stop the Soup Tasting Bland?
Season in layers: a little salt with the vegetables, more after blending. Do not skip the lemon juice; its acidity lifts the whole bowl. White pepper keeps the pale colour pristine if you are serving to guests, though black pepper tastes the same.
Troubleshooting: Too Thick or Too Thin?
If the soup is too thick, whisk in hot stock a ladle at a time until it coats the back of a spoon. If too thin, simmer uncovered for 5 to 10 minutes to reduce, or blend in an extra boiled potato. Lumps mean it needs longer blending, not more liquid.
What to Serve With Leek and Potato Soup
Crusty bread is non-negotiable for dunking. A cheese scone or a slice of bacon-topped toast turns it into lunch. For a dinner-party starter, serve small portions topped with crispy pancetta and a drizzle of cream.
Serving Suggestions for Every Occasion
For a weeknight supper, serve big bowls with crusty bread and call it done. As a dinner-party starter, serve smaller portions in warmed bowls topped with a swirl of cream, crispy shallots and chive oil. The pale green colour looks elegant against dark bowls.
For packed lunches, portion into jars and reheat at work; it thickens on standing, so stir in a splash of hot water. Children often prefer it with grated cheese stirred through and soldiers of toast for dipping.
Troubleshooting Common Soup Problems
Too salty? Add a peeled, quartered potato and simmer 10 minutes, then remove it; the potato absorbs excess salt. Too bland despite seasoning? A squeeze more lemon juice or a knob of butter whisked in at the end often fixes it.
Grainy texture usually means under-blending or waxy potatoes. Blend longer, in batches if needed, and next time choose floury Maris Piper. If the soup splits after adding cream, it boiled: whisk vigorously off the heat and it often comes back together.
FAQ
Can I make it vegetarian?
Yes, swap chicken stock for vegetable stock.
Can I use milk instead of cream?
Whole milk works for a lighter soup, but single cream is silkier.
Why did my soup turn beige?
The leeks browned. Keep the heat low with the lid on.
Do I need to peel the potatoes?
Yes, for the smoothest finish.
How long does it keep in the fridge?
Up to 3 days sealed; reheat until piping hot.
Can I make it without a blender?
You can mash it rustic, but it will not be silky.
