Gordon Ramsay’s asparagus soup is a bright, vibrant green purée made by sweating asparagus in butter with shallots and garlic, then blending it smooth and finishing with cream and lemon juice. The tips are sautéed separately and served on top. It takes about 25 minutes and the colour stays vivid because the asparagus never boils.
The technique comes from his MasterClass II, where he explains why most asparagus soups fail: “Asparagus are often steamed or boiled, leaving all of their flavour in the cooking liquid.” His fix is to “starve them of water” by sweating them gently in butter so the flavour stays in the vegetable instead of leaching out. He also insists on shallots instead of onions because they “have a more mellow flavour and won’t overpower the asparagus.”
The other thing he’s strict about is colour. Browning the asparagus even slightly turns it grey and bitter, so everything cooks low and slow with no colour on anything. If the green starts turning dull, it’s already overcooked. That’s why this soup goes from pan to blender in under 10 minutes of actual cooking, just enough to soften the stems without losing the brightness.
Gordon Ramsay Asparagus Soup
Course: Soup, Starter4
10
minutes15
minutes220
kcal25
minutesEasy
Asparagus soup built from Gordon Ramsay’s MasterClass II purée technique. Asparagus stems sweated gently in butter with shallots and garlic, simmered briefly in vegetable stock, blended silky smooth and finished with cream and lemon. Tips sautéed separately and piled on top. Ready in 25 minutes.
Ingredients
500g (1 lb 2 oz) thick asparagus spears
2 tbsp butter, plus a knob for the tips
1 tbsp olive oil
2 shallots, finely chopped
2 garlic cloves, finely chopped
Few sprigs of lemon thyme (or thyme plus a strip of lemon zest)
800ml (3⅓ cups) vegetable stock
100ml (⅓ cup) double cream
Squeeze of lemon juice
Sea salt and freshly ground black pepper
Drizzle of olive oil, to serve
Directions
- Trim the asparagus: Hold each spear near the base and run the edge of your knife along the stem until it gives way easily. Cut there. Snap off the top 3cm of each spear and set the tips aside. Slice the remaining stems into 2cm pieces.
- Sweat the aromatics: Melt the butter with the olive oil in a large pan over a medium-low heat. Add the shallots and garlic and cook for 3 minutes until soft and translucent. Do not let them colour.
- Cook the asparagus: Add the sliced asparagus stems, lemon thyme, a pinch of salt and a grind of pepper. Stir everything together and sweat gently for 3 to 5 minutes until the asparagus softens slightly. Do not let it brown or turn grey.
- Add stock and simmer: Pour in the vegetable stock, bring to a gentle simmer and cook for 5 to 8 minutes until the asparagus is completely tender when pinched between your fingers.
- Blend and strain: Remove from the heat. Blend until completely smooth using a stick blender or jug blender. Pass through a fine sieve into a clean pan for a silky finish.
- Finish: Reheat the soup gently. Stir in the cream and a squeeze of lemon juice. Taste and adjust the seasoning. Do not let it boil after adding the cream.
- Sauté the tips: Melt a knob of butter in a small pan. Add the reserved asparagus tips and cook for 2 to 3 minutes until just tender and bright green.
- Serve: Ladle into warm bowls. Pile the sautéed tips in the centre and drizzle with olive oil.
FAQs
Why does Ramsay sweat asparagus instead of boiling it?
Boiling asparagus for soup is what most recipes tell you to do, but the problem is that the flavour ends up in the water instead of the vegetable. Ramsay calls his approach “starving them of water,” which means cooking them gently in butter so nothing escapes.
The difference is obvious in the finished soup. A boiled version tastes like green-tinted stock. A sweated version tastes like concentrated asparagus.
Why does the soup turn grey?
Two reasons. Either the asparagus browned during cooking, which turns the colour muddy and adds a bitter edge, or it simmered for too long and the bright green chlorophyll broke down.
Ramsay is clear about this: “If it starts to gray it is overcooked.” Keep the heat low, don’t rush the sweating stage, and get the soup off the heat and into the blender as soon as the stems are tender.
Why shallots instead of onions?
Asparagus has a delicate, slightly sweet flavour that’s easy to drown out. Ramsay uses shallots because they’re milder and sweeter than white onions, so they support the asparagus without competing.
A strong onion flavour in asparagus soup means you’re tasting onion soup with asparagus in it, not the other way around.
What’s the best time of year to make this?
British asparagus season runs from late April to late June, and that’s when the spears are at their best: fat, sweet and half the price of the imported stuff. Ramsay writes in the Ultimate Cookery Course that he’d rather wait for British asparagus in April than buy it flown in from Peru. If you love asparagus in season, try our asparagus risotto too.
Do you need to strain the soup?
You don’t have to, but it makes a real difference. Asparagus has fibrous strings running through the stems that a blender can’t fully break down. Passing the soup through a fine sieve catches those strings and gives you a silky, restaurant-smooth texture.
For a dinner party, serve this as a spring starter before something like a roast duck as the main. The light, bright soup and the rich duck balance each other out.
