Spring Asparagus Soup Recipe (Silky, Uses Woody Ends)
Last updated on October 13th, 2026
This spring asparagus soup is built to use every part of the vegetable, including the woody stem ends most people throw straight in the bin. Simmered gently, blended until silky, and strained to catch any last fibrous bits, it turns a normally wasted trim into a bright green, restaurant-worthy bowl.
How to Make Asparagus Soup from Woody Ends
One of the best things about this soup is that it uses the parts of the asparagus most people throw away. The woody, fibrous ends that don’t work for sautéing get simmered until soft, then blended and strained: so nothing from the bunch goes to waste, and you still end up with a completely smooth, silky soup. Save the tender tips to sauté with feta and lemon for a quick lunch.
Asparagus also pairs naturally with other green vegetables, which means this recipe adapts easily. Spinach, kale, peas, or leek tops can all be added alongside it to build a bit more body and depth of colour: just keep asparagus as the dominant flavour rather than an equal partner, and you can shape the soup to whatever you have in the fridge. It’s the same flexible approach as my adaptable spinach and potato soup.
The soup’s colour comes down to how you treat the onion at the start. Sweat it over a low heat for a full five minutes or more, until it’s soft and translucent with no colour at all: if it catches and browns, the finished soup takes on a muddy, brownish tinge instead of the bright green you’re after. Using a pale vegetable stock made from scratch helps keep the colour bright too. It’s a small step, but it’s what keeps this a proper spring soup rather than a beige one.
Start by snapping each asparagus stem: hold it near the base and bend it until it breaks. The woody part varies from stem to stem, so snapping gives you the tender part for a sauté and the ends for this soup, instead of cutting every stem to the same length. I used to prefer cutting them all the same size, but snapping is just better.
Tips for the Best Asparagus Soup
- Asparagus soup generally needs another green vegetable to help give it a bit more body and depth in colour, I’m using a few spinach leaves, this could also be some peas, leek tops, or broccoli. Just keep the asparagus as the main veg, so for 400g of asparagus, I wouldn’t use any more than 150g of anything else.
- To add other flavours, think mint, basil, parsley, or thyme, just remember to keep the delicate asparagus flavour the main flavour. If I was adding basil to this volume of soup I wouldn’t add more than 5 or 6 leaves, less is more!
- Always remember BOILING’S SPOILING! This applies to so many things.
- Use a high-powered liquidiser if you have one. A powerful stick blender will do the job, but more fibrous bits will be left in the soup.
- When blending, fill the liquidiser no more than halfway, crack the lid to release the steam and hold it on with a towel to protect your hand.
- Be sure to strain the soup through a fine mesh strainer, the ends of asparagus are very fibrous.
What other vegetables can I add to asparagus soup?
Spinach, peas, leek tops, or broccoli all work well to give the soup more body and depth of colour. Keep asparagus as the main vegetable though: for 400g of asparagus, don’t use more than 150g of anything else.
Do I need to strain asparagus soup?
Yes. Asparagus ends are naturally fibrous, so passing the blended soup through a fine mesh strainer removes any stringy bits and leaves you with a silky, smooth texture.
What’s the best way to blend this soup?
A high-powered liquidiser gets the smoothest result. A powerful stick blender works too, but more fibrous bits will be left in the soup, so strain it well.
Can I make asparagus soup without cream?
Yes, this recipe has no cream at all. The onion is cooked in a little olive oil and butter, and the silky texture comes from blending the soup for two to three minutes and straining it.
How do I keep asparagus soup bright green?
Cook the onion right down for five minutes or more until it is translucent with no colour, because browned onion gives the soup a muddy, brownish tinge. A little spinach adds body and depth of colour too.
Can I freeze asparagus soup?
Yes, this soup freezes well for up to 3 months. Cool it completely before transferring to an airtight container, and thaw fully before reheating gently on the stove.
What herbs go well with asparagus soup?
Mint, basil, parsley, or thyme all complement asparagus nicely. Just use them sparingly (no more than 5-6 basil leaves for this quantity) so they don’t overpower the soup’s delicate flavour.
Spring Asparagus Soup Recipe (Silky, Uses Woody Ends)
Equipment
- Blender (jug, liquidiser)
- Dish / Ramekin
- Fine-mesh strainer / Chinois
- Chef’s knife
- Chopping board
- Digital scales
- Frying pan
- Saucepan
- Serving plate / Platter
- Ladle / Skimming spoon
Ingredients
- 1/2 an Onion 150g / 5.3oz
- Asparagus stalks 300g / 10.6oz
- Spinach leaves and stalks 70g / 2.5oz
- 500 ml / 1-pint Vegetable or Chicken stock
- Salt to taste
- Butter 25g / 1oz
Instructions
- Finely dice the onion, cut the asparagus stems into finger-width pieces and roughly slice the spinach leaves and stalks.
- Place a saucepan over a medium to low heat, add a splash of olive oil and a small knob of butter.
- Once the butter is foaming add the finely diced onion and a pinch of salt and sweat over a low heat.
- Cook the onions right down so they are translucent but with no colour, this is a slow process. If you let them darken in colour then the soup will have a brown, muddy-looking tinge to it. (It’ll still be delicious!)
- Add the stock and bring to a simmer, once simmering add the asparagus stalks and continue to simmer for 10 minutes, remember boiling’s spoiling!
- Add the chopped spinach for the last 3 minutes of simmering.
- Place everything in a blender, crack the lid a little to release steam and pressure and blend on high speed for 2 to 3 minutes.
- Wipe out your pan and strain the soup through a fine mesh strainer to remove any fibrous bits.
- Taste for seasoning and bring to a simmer.
- Serve immediately and enjoy this super easy, delicious spring soup.
Video
Nutrition
Nutrition Facts
| Total Fat | 15.3g |
| Saturated Fat | 7.2g |
| Cholesterol | 26.9mg |
| Sodium | 854.1mg |
| Total Carbohydrate | 16.4g |
| Dietary Fiber | 5.2g |
| Sugars | 7.5g |
| Protein | 5.8g |
| Potassium | 658.3mg |
