Mary Berry Somerset Mushroom Soup

Mary Berry Somerset Mushroom Soup is a velvety, deeply savory British classic that leans on two types of mushrooms—earthy dried porcini and fresh flat mushrooms—to build a broth with real backbone. A quick blend and a swirl of cream give it a silky finish, while a splash of Worcestershire sauce adds a quiet but necessary depth. This is the kind of starter that feels both rustic and elegant, perfect when you need something warming but not heavy.

You will have it on the table in 50 minutes, and the method is straightforward enough for a confident beginner—the one step that asks for a little care is straining the porcini soaking liquid to catch any hidden grit. Think of it for a casual lunch with good bread, or as the opening act for a Sunday roast when you want something that quietly impresses.

What is Mary Berry Somerset Mushroom Soup?

This soup marries rehydrated dried porcini and thinly sliced fresh flat mushrooms in a butter-based roux, then simmers everything in stock until tender and purées it into a smooth, creamy bowl. The taste is rich and woodsy with a subtle tang from Worcestershire sauce, while the texture lands somewhere between a velouté and a light cream soup. It’s British comfort cooking at its most unfussy—ideal for cool autumn days or whenever you need a bowl of quiet luxury.

Why This Recipe is Worth Trying

• Two mushrooms, double the character — Dried porcini deliver an intense, earthy backbone while the fresh mushrooms keep the soup grounded and budget-friendly.
• Luxuriously smooth without heaviness — A quick roux and a whirl in the blender give it a silky body that does not sit like a stone.
• Make-ahead magic — The base freezes beautifully without cream, so you can prep it weeks in advance and finish it on the day.
• Simple technique, refined result — Sautéing until the liquid fully evaporates concentrates the mushroom flavor, turning a handful of pantry ingredients into something truly special.

Essential Ingredients to Make Mary Berry Somerset Mushroom Soup

You probably have most of these already, minus the porcini. Each item pulls its weight in building that deep, rounded flavor.

Mushrooms

• 1 oz (28g) dried porcini mushrooms — The powerhouse of the soup. Their concentrated umami bloom in hot water and lend an almost meaty depth you cannot get from fresh mushrooms alone.
• 1 lb (450g) flat mushrooms (portobello or field), wiped clean and thinly sliced — These provide volume, a mild earthy note, and a silky texture after puréeing.

Aromatics & Base

• 2 tbsp unsalted butter — Butter carries the flavor and helps the onions soften without burning. Unsalted gives you full control over the seasoning.
• 1 medium onion, finely chopped — Sweetness and body. Finely chopping ensures it melts into the background after blending.
• 1 clove garlic, crushed — Just one clove, because we want it to whisper, not shout.
• 2 tbsp all-purpose flour — The thickener. Cooking it out for a minute or two removes any raw taste and sets up a lump-free soup.

Liquids & Finishing

• 2 1/2 cups (600ml) chicken or vegetable stock, preferably homemade — A good stock is the quiet foundation. Homemade brings a gelatinous richness, but a quality store-bought low-sodium version works in a pinch.
• 1/2 cup (120ml) heavy cream (double cream), plus extra for drizzling — Adds silkiness and a gentle richness. Save a little for the final swirl.
• 1 tsp Worcestershire sauce (optional) — A tiny amount deepens the savory notes without tasting overtly like the sauce itself.

Seasonings & Garnish

• 3/4 tsp fine sea salt, plus more to taste — Start with this and adjust near the end, especially if your stock is salted.
• Freshly ground black pepper, to taste — A generous grinding lifts the earthy notes.
• Fresh chopped parsley or chives, for garnish — A pop of green and a fresh, herbaceous contrast against the creamy soup.

Handy Kitchen Tools for Best Results

• Large, heavy-based saucepan — Even heat distribution prevents scorching, especially when the mushrooms are releasing moisture.
• Heatproof bowl — For soaking the porcini. A Pyrex jug or a metal bowl both work.
• Fine-mesh sieve and paper towel — The only reliable way to remove grit from the soaking liquid. Do not skip this.
• Immersion blender — Puréeing directly in the pot is safer and creates less mess. A countertop blender works, but blend in batches with the lid vented.
• Wooden spoon — Gentle stirring without scratching your pan, and it helps you feel any flour lumps early.

Step-by-Step Guide to Making Mary Berry Somerset Mushroom Soup

All ten steps matter, but the mushroom sauté is where the flavor anchors itself. Do not rush it.

• Soak the porcini — Place dried porcini in a heatproof bowl and pour over 1 cup boiling water. Let them sit for 20 minutes. Lift them out, chop roughly, and strain the liquid through a sieve lined with paper towel. Reserve the strained liquid.
• Melt the butter and cook the onion — In a large saucepan, melt the butter over medium heat. Add the finely chopped onion and cook for 5-6 minutes, stirring occasionally, until soft and translucent. Do not let it brown.
• Add the garlic — Stir in the crushed garlic and cook for exactly 1 minute, keeping it moving so it does not scorch. The garlic should smell fragrant, not bitter.
• Sauté the mushrooms — Raise the heat to medium-high and add both the sliced fresh mushrooms and the chopped porcini. Stir to coat in butter. Cook for 8-10 minutes, stirring frequently, until all the liquid they release has evaporated and the sizzle turns dry and the mushrooms start to catch golden edges.
• Sprinkle the flour — Scatter the flour over the mushroom mixture and stir continuously for 1-2 minutes. The mixture will look pasty and dry—this means the raw flour taste has cooked off and your roux is ready.
• Pour in the stock — Gradually add the stock, stirring constantly to prevent lumps. Then slowly pour in the reserved porcini soaking liquid, leaving behind any sediment in the bowl. Bring to a gentle simmer.
• Simmer gently — Reduce the heat to medium-low and simmer uncovered for 20 minutes, stirring now and then. The soup will thicken slightly and the flavors will round out.
• Purée until smooth — Take the pan off the heat. With an immersion blender, purée until velvety and no visible mushroom pieces remain. If using a countertop blender, blend in batches, filling no more than halfway and venting the lid.
• Finish with cream — Stir in the heavy cream and Worcestershire sauce. Return the pan to low heat and warm through for 2-3 minutes—do not let it boil, or the cream may curdle. Season with salt and pepper, then taste and adjust.
• Ladle and garnish — Serve in warmed bowls with a delicate drizzle of extra cream and a scatter of fresh parsley or chives.

What I Got Wrong (And How I Fixed It)

Here is what tripped me up the first few times, and the small adjustments that put things right.

• The soaking liquid tasted gritty — I was pouring it straight from the bowl, grit and all. Straining through a paper towel-lined sieve now catches even the finest sediment and leaves a clean, intense mushroom broth.
• My soup turned out thin and watery — I had not let the fresh mushrooms cook off all their released liquid before adding flour. Waiting for that dry sizzle and a hint of gold on the edges makes a genuine difference in body.
• The garlic tasted acrid — Adding it too early and letting it brown. Now I put it in after the onion, cook for exactly one minute, and keep the heat at medium.
• I ended up with tiny hard bits in the soup — The porcini pieces were too large before blending. Chopping them roughly after soaking, plus an extra 20 seconds with the immersion blender, solved that.
• The cream curdled on reheating — I had brought the soup to a boil after adding the cream. Gentle warming over low heat keeps it silky and intact.

Healthier Version of Mary Berry Somerset Mushroom Soup

• Swap half the butter for olive oil — Use 1 tbsp butter and 1 tbsp olive oil. You still get a nice mouthfeel with reduced saturated fat.
• Replace heavy cream with half-and-half or whole milk — The soup will be slightly lighter in texture. Warm it very gently and skip the boil to avoid separation.
• Use whole wheat flour instead of all-purpose — It thickens just as well and adds a bit of fiber without altering the taste noticeably.
• Lean into the vegetable stock version — A good vegetable stock makes the soup entirely vegetarian and lowers the calorie count a touch.
• Reduce the salt by using unsalted stock — Homemade unsalted stock gives you full control, so you can use far less than 3/4 tsp without losing flavor.

Ingredient Substitutions for Mary Berry Somerset Mushroom Soup

• 1 oz dried porcini → 1 oz dried shiitake or mixed wild mushrooms — Shiitake give a similarly deep, woodsy note; mixed wild mushrooms bring more complexity. Soak and strain exactly the same way.
• 1 lb flat mushrooms → 1 lb cremini or white button mushrooms — Cremini offer a slightly darker flavor, while white buttons are milder but perfectly serviceable. Slice them thin.
• 2 tbsp unsalted butter → 2 tbsp plant-based butter or 3 tbsp olive oil — For a dairy-free base, use a good plant-based butter that melts well, or extra-virgin olive oil for a fruitier profile.
• 2 tbsp all-purpose flour → 2 tbsp gluten-free all-purpose blend or 1 tbsp cornstarch slurry — A GF blend works as a 1:1 swap for the roux; if using cornstarch, mix it with a little cold water first and stir in after simmering rather than cooking it out early.
• 1/2 cup heavy cream → 1/2 cup canned coconut cream (full fat) — Coconut cream mimics the richness and whips up a nice swirl. The mild coconut taste fades behind the mushrooms.
• Worcestershire sauce → tamari or soy sauce — A few drops supply the same savory depth, and keep the soup vegetarian or gluten-free as needed.

Pairing Ideas: What to Serve With Mary Berry Somerset Mushroom Soup

This soup is rich but not heavy, so it plays well with crisp, fresh sides and sturdy bread.

• Crusty sourdough with salted butter — The tangy bread and melting butter cut through the creaminess beautifully.
• A simple arugula salad with lemon vinaigrette — Peppery greens and a sharp dressing wake up the palate between spoonfuls.
• Roasted garlic and herb crostini — Rub toasted baguette slices with a clove of garlic and a drizzle of olive oil for a crunchy, aromatic pairing.
• Steamed asparagus with shaved Parmesan — Served on the side, it adds a fresh, spring-like contrast when you want something a little more substantial.
• Cold glass of dry white wine like Pinot Grigio or a lightly oaked Chardonnay — The acidity and brightness lift the earthy notes without overpowering them.
• Warm pear and walnut toasted sandwich — A gooey, nutty grilled cheese on sourdough—especially with a slice of pear—turns the soup into a cozy, complete meal.

Expert Tips to Make Perfect Mary Berry Somerset Mushroom Soup

• Never skip the porcini soaking liquid — It holds more flavor than the mushrooms themselves. Straining carefully through paper towel is non-negotiable.
• Watch for the sizzle change — When the mushrooms stop steaming and start frying with a drier, sharper sound, you know the moisture has evaporated and browning has begun. That is your cue.
• Season in layers — Add a pinch of salt after the mushrooms go in, another pinch with the stock, and final adjustments at the end. This builds natural depth instead of a harsh salty hit.
• Warm the bowls before serving — A cold bowl pulls the heat from the soup fast. A minute of hot water in each bowl does the trick.
• Vent the blender lid and cover with a towel — If using a countertop blender, hot soup expands quickly. Removing the cap and holding a folded towel over the opening prevents burns and mess.
• Rest the soup for 5 minutes off the heat before blending — Slightly cooler soup blends more safely and leads to a smoother texture.
• Taste after blending, not before — Puréeing unlocks all the hidden flavors, so only then can you judge the seasoning accurately.

Creative Ways to Customize Mary Berry Somerset Mushroom Soup

• Add a truffle twist — Stir in a few drops of truffle oil just before serving, or shave a little truffle over each bowl for a luxurious, special-occasion starter.
• Boost with fresh herbs during blending — Toss in a handful of fresh thyme leaves or a few sprigs of tarragon before puréeing; the herbs infuse the soup with a fragrant, garden-fresh note.
• Turn it into a creamy mushroom and chicken soup — Stir in shredded leftover roast chicken after blending for a heartier meal that still feels elegant.
• Make it spicy and smoky — Add a small pinch of smoked paprika and a shake of cayenne pepper when sautéing the mushrooms. It warms the back of the throat without masking the earthiness.
• Top with crispy sage or pancetta — Fry a few sage leaves in butter until crisp and scatter them on top, or crumble a strip of cooked pancetta for a salty crunch.
• Deepen the colour with a splash of sherry — Deglaze the pan with a tablespoon of dry sherry right before adding the stock, cooking it off quickly to leave a nutty, caramelized note.

Storing Mary Berry Somerset Mushroom Soup the Right Way

• Refrigerate the finished soup (with cream) — Cool the soup quickly, transfer to an airtight container, and keep in the fridge for up to 3 days. The flavours actually improve overnight.
• Freeze the base without cream — Portion the cream-free purée into freezer-safe containers, leaving a little headspace. It freezes well for up to 3 months.
• Defrost overnight in the fridge — Place the frozen soup in the refrigerator for 8–10 hours. Avoid thawing at room temperature, which can affect texture and safety.
• Label containers with the date — It takes two seconds and saves you from playing freezer roulette a month later.
• Store garnishes separately — Keep chopped herbs in a damp paper towel in the fridge, and cream in its own jar, so everything tastes fresh when you reassemble.

How to Reheat Mary Berry Somerset Mushroom Soup (If Needed)

• Stovetop (best method) — Pour the soup into a saucepan and warm over low heat, stirring occasionally. If it is too thick, thin it with a splash of stock or water. Never let it boil.
• Microwave (for a single serving) — Use a microwave-safe bowl, cover loosely, and heat in 30-second bursts at 50% power, stirring between each, until steaming. The gentler heating helps keep the cream from separating.
• From frozen, stovetop — Place the frozen block in a saucepan with a thin layer of water or stock, cover with a lid, and warm over low heat, stirring as it loosens. Once fully thawed, stir in the cream.

Nutritional Breakdown (per serving)

Based on 1 serving out of 4.

• Calories — 220
• Protein — 6.7g
• Fat — around 17.2g
• Carbohydrates — 12.4g
• Fiber — 1.9g
• Sugar — roughly 4.7g
• Sodium — about 431mg

FAQs

Can I make Mary Berry Somerset Mushroom Soup ahead of time?

Absolutely. Prepare it up to the point of adding cream, then cool and refrigerate the base for up to 3 days. Stir in the cream just before rewarming to keep the texture fresh.

How do I freeze Mary Berry Somerset Mushroom Soup?

Omit the cream, portion the smooth mushroom purée into freezer-safe containers, and freeze for up to 3 months. Thaw overnight in the fridge, then reheat gently and stir in the cream.

Can I use only fresh mushrooms and skip the dried porcini?

You can, but you will lose the deep, woodsy intensity that makes this soup special. The porcini soaking liquid is the secret backbone—without it, the soup tastes milder and less complex.

Is Mary Berry Somerset Mushroom Soup suitable for vegetarians?

Yes, as long as you use a good-quality vegetable stock and omit the Worcestershire sauce or choose a vegetarian brand. The rest of the recipe is naturally meat-free.

Why did my soup turn out lumpy?

Flour clumps usually form when the stock is added too quickly or without enough stirring. Pour it in a slow, steady stream while whisking or stirring constantly, and the flour will dissolve smoothly.

What can I use instead of Worcestershire sauce in Mary Berry Somerset Mushroom Soup?

A few drops of tamari, soy sauce, or even a tiny splash of balsamic vinegar will supply a similar savory depth. The quantity is so small that the swap is barely noticeable.

Wrapping It Up

This Mary Berry Somerset Mushroom Soup has become my go-to when I want a starter that feels effortless but tastes like it demanded far more work. The combination of dried and fresh mushrooms, plus that little hit of Worcestershire, creates a bowl that is both comforting and quietly impressive. Give it a try on a cool evening—with some crusty bread and a glass of something crisp, it delivers every single time.

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