If you’re looking to shake up your soup repertoire with something magical and utterly delightful, look no further than Jerusalem artichoke soup. These knobbly little gems often get overlooked in favour of more common root vegetables, but they bring a unique nuttiness and velvety texture that’s hard to beat. This luxurious, velvety soup makes a fabulous lunch or an impressive starter for a dinner party. The creamy texture and complex flavours make it irresistible.This recipe has become a firm favourite in my kitchen, and I’m sure it will become one in yours too.
This soup is a masterclass in doing more with less. It uses a handful of pantry staples – onion, leek, celery, garlic, and a bouquet garni of fresh herbs – but delivers layers of flavour that will leave everyone asking for seconds.
What Are Jerusalem Artichokes?
Jerusalem artichokes, also known as sunchokes, are a fascinating vegetable that often confuses people with their misleading name. Despite the “Jerusalem” part, they have no connection to the city, and they’re not related to traditional artichokes either. They are, in fact, a type of tuber from the sunflower family (Helianthus tuberosus), native to North America.
These knobbly, potato-like tubers are cultivated for their edible roots, which offer a unique and versatile flavour. When raw, Jerusalem artichokes are crunchy with a sweet, nutty taste that’s reminiscent of water chestnuts or hazelnuts. Once cooked, their texture becomes soft and creamy, and their flavour deepens into a mild earthiness with a hint of sweetness.
Jerusalem artichokes aren’t just delicious – they’re also a fantastic source of nutrients: Rich in iron, high in potassium and has inulin content.
These tubers are incredibly adaptable. You can roast, boil, sauté, or mash them, or enjoy them raw in salads for a refreshing crunch. In soups like the one we’re featuring here, Jerusalem artichokes lend a creamy, luxurious texture that’s truly unparalleled.
If you haven’t cooked with Jerusalem artichokes before, this soup is the perfect way to start exploring their unique flavour and silky smoothness.
Ingredients Used to Make the Best Jerusalem Artichoke Soup
- Jerusalem Artichokes: The star of the dish! These knobbly tubers bring an earthy, nutty sweetness and a creamy texture when blended.
- Yellow Onion: onions add a natural sweetness and savoury base to the soup, balancing the flavours beautifully.
- Leek (White Parts Only): Leeks contribute a subtle onion-like flavour with a mild, almost sweet profile.
- Celery: Celery introduces a refreshing, slightly herbal note. It complements the earthy artichokes and adds another layer of flavour complexity.
- Garlic: Garlic brings a gentle pungency and warmth to the soup, lifting the other ingredients without overpowering them.
- Potato: A small potato adds body and helps thicken the soup naturally. It works harmoniously with the artichokes to create that velvety, luxurious texture.
- Bouquet Garni: A bundle of fresh herbs – sage, thyme, parsley, and bay leaf – infuses the soup with a subtle herbal fragrance. This adds a refined depth and aroma, tying all the flavours together.
- Vegetable Stock: The backbone of any great soup. Vegetable stock enhances the flavour of the ingredients while keeping the recipe light and vegetarian-friendly.
- Unsalted Butter or Oil: Used to sauté the vegetables at the start, butter (or oil for a vegan option) helps create a luscious base for the soup. It also adds a touch of richness.
- Salt: The simplest seasoning, essential for highlighting the natural flavours of the vegetables and herbs.
- Black Peppercorns: A few whole peppercorns provide subtle spice and a hint of warmth. Their flavour deepens as the soup simmers.
- Oat Cream: Adds a silky, dairy-free creaminess while complementing the nutty flavour of the Jerusalem artichokes. It’s a lighter and healthier alternative to heavy cream, making the soup vegan-friendly if butter is swapped for oil.
How to Make the Best Jerusalem Artichoke Soup:
- Sauté the Vegetables
Melt the butter in a heavy-bottomed pan over medium heat. Once it has melted, add the onions, leek, celery, and garlic. Stir them gently and let them sauté for 3-4 minutes, or until the onions begin to soften and release their juices. - Add the Key Ingredients
Stir in the bouquet garni, chopped potatoes, sliced Jerusalem artichokes, salt, and peppercorns. Mix everything well and let it cook for 8-10 minutes, stirring occasionally to prevent sticking. - Pour in the Stock
Pour the vegetable stock into the pan and bring the mixture to a boil. Once it’s bubbling, reduce the heat to a gentle simmer. Let the soup cook uncovered for 25-30 minutes, or until the vegetables are soft and tender. Skim off any foam that rises to the surface during cooking. - Blend the Soup
Remove the bouquet garni from the pan and discard it. Transfer the soup to a blender and blend it until smooth. If you prefer an extra-silky texture, strain the soup through a sieve after blending. - Adjust Seasoning
Taste the soup and adjust the seasoning with more salt and pepper if needed. - Add the Cream
Return the soup to the pan and stir in the cream. Heat the soup gently until it just begins to boil. - Serve and Enjoy
Ladle the soup into bowls and serve it hot. Garnish with artichoke crisps, croutons, or a drizzle of cream for an elegant touch.
Helpful Tips and Tricks To make the best Soup:
- Clean Thoroughly : Jerusalem artichokes can be quite muddy, so give them a good scrub under running water before cooking. This ensures no grit ends up in your soup.
- Prevent Browning : Once peeled, artichokes oxidise quickly, turning brown. To keep them fresh, place the peeled pieces in a bowl of cold water with a squeeze of lemon juice.
- Even Cooking : Cut the artichokes into roughly equal-sized pieces to ensure they cook evenly. This saves time and helps achieve a smooth texture.
- Salt Smartly : If using stock cubes, be mindful of the salt content as they can be quite salty. Adjust the salt in the recipe accordingly. Fresh stock is ideal for better control over seasoning.
- Make It Ahead: Jerusalem artichokes are seasonal, so take advantage of their availability by making a big batch of soup and freezing it. The soup stores well in the fridge for up to 3 days. You can also freeze it for up to 6 months. Just ensure you reheat it gently to avoid splitting if it contains cream.
- Pepper Substitution: Don’t have whole peppercorns? Ground black pepper works just as well – simply adjust to taste.
Commonly Asked Questions About Jerusalem Artichoke Soup
Do I need to peel Jerusalem artichokes?
Peeling is optional! The skin is edible and blends well, especially in soups. However, peeling can create a smoother texture. If you leave the skin on, make sure to scrub them thoroughly to remove dirt.
Why does my soup taste bitter?
Jerusalem artichokes can develop a slight bitterness if overcooked or if their skin is left on during blending. Adding a splash of lemon juice or a pinch of sugar can help balance the flavours.
What can I use instead of oat cream?
You can substitute oat cream with fresh cream, coconut milk, almond cream, or cashew cream. Each alternative adds a slightly different flavour but maintains the soup’s creaminess.
What if I don’t have a bouquet garni?
No problem! Simply tie a mix of fresh or dried herbs (like thyme, parsley, sage, and bay leaf) in cheesecloth, or add them loose to the soup and strain before blending.
Why does this soup cause bloating?
Jerusalem artichokes are high in inulin, a type of prebiotic fibre that can sometimes cause bloating or gas for those with sensitive stomachs. To reduce this effect, soak the artichokes in water with lemon juice for 30 minutes before cooking.
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Ingredients
method
(2 tbsp unsalted butter or oil, 1 medium yellow onion thinly sliced, 1 medium leek white parts only thinly sliced, 2 ribs celery thinly sliced, 2 cloves garlic roughly chopped)
(500g Jerusalem artichokes thickly sliced, 1 small potato peeled and roughly chopped, 1 bouquet garni - sage, thyme, parsley, bay leaf, ¾ tsp salt, 3-4 black peppercorns)
(1.25 litres vegetable stock)
(Adjust salt and pepper as needed)
(¼ cup oat cream or fresh cream)