Pea and Mint Soup: 20-Minute UK Recipe
Bright green pea and mint soup with fresh garden peas. Ready in 20 minutes, serves 4 as a starter or light lunch. Peak May to July in UK gardens.
Prep
10 minutes
Cook
10 minutes
Total
20 minutes
Serves
4 as a starter or light lunch
Key takeaways
- 500g peas + 1 onion + 1L stock + 30g mint + 100ml cream = 4 generous bowls in 20 minutes
- Frozen peas are as good as fresh - frozen within 2 hours of picking, they keep more flavour than supermarket fresh
- Boil the peas for exactly 4 minutes - longer turns them grey and dull
- Add the mint at the very end, just before blitzing - heat destroys mint flavour fast
- Pea pods make excellent stock - simmer 30 minutes with onion peelings and bay leaf
- Garnish with creme fraiche, a few whole peas, mint leaves and good olive oil
From the Garden
Grow these for the recipe: Garden peas (Pisum sativum, May to July), Mint (Mentha spicata), Spring onions (optional swap for the brown onion).
Ingredients
Main ingredients
- • 500g shelled fresh peas (or frozen, no need to defrost)
- • 1 medium brown onion, finely chopped
- • 2 garlic cloves, finely chopped
- • 30g unsalted butter
- • 1 litre good vegetable stock (homemade or low-salt cube)
- • 30g fresh mint leaves (Mentha spicata)
- • 100ml double cream (or creme fraiche for a lighter finish)
- • 1 tsp fine sea salt
- • Black pepper, freshly ground
- • Squeeze of lemon juice
To garnish (per bowl)
- • 1 tbsp creme fraiche
- • Handful of whole cooked peas
- • Small mint leaves
- • Good olive oil
Equipment
- Large heavy-based saucepan (3 litre)
- Wooden spoon
- Stick blender or upright blender
- Sieve (optional, for the smoothest texture)
Method
- 1
Melt the butter in a heavy-based saucepan over medium-low heat. Add the chopped onion and a pinch of salt. Sweat slowly for 6 minutes until soft and translucent but not browned.
- 2
Add the chopped garlic and stir for 30 seconds until fragrant. Do not let it brown.
- 3
Pour in the vegetable stock and bring to a fast boil over high heat.
- 4
Add the peas. The stock should drop briefly off the boil; bring it back to a rolling boil and cook the peas for exactly 4 minutes. Set a timer.
- 5
Take the pan off the heat. Reserve 4 tablespoons of cooked peas for garnish (drain on kitchen paper).
- 6
Add the fresh mint leaves to the pan and stir for 10 seconds. Heat is now off so the mint flavour will not blow off.
- 7
Blitz the soup with a stick blender (or transfer to an upright blender in batches). Blend for 60-90 seconds until completely smooth. For the smoothest result, pass through a sieve into a clean pan, pressing the solids with a wooden spoon.
- 8
Stir in the cream, salt, pepper and a small squeeze of lemon juice. Taste and adjust. Serve immediately or chill in iced water for a chilled summer version.
Storage
Best eaten on the day. Keeps refrigerated for 2 days but the colour darkens. Reheat gently over low heat without boiling - boiling reheated pea soup destroys the colour. Freezes 3 months but defrost overnight in the fridge and reheat without boiling. Add fresh cream after reheating, not before freezing.
Pea and mint soup is the colour of late spring. Bright emerald green, finished with a swirl of cream and a few mint leaves, ready in 20 minutes from raw ingredients to bowl. The first British peas hit the markets in mid-May and run through July; this is the recipe to make every Saturday lunch through that window.
You will find the timing rules that protect the colour, the genuine reason frozen peas often beat fresh, and the mint-at-the-end trick that keeps the flavour bright rather than tired. The Royal Horticultural Society pea growing guide has the full UK growing calendar if you want to grow your own crops.
Why this works
Peas hit peak sweetness for about 90 seconds in boiling water. Beyond that the natural sugars start converting back to starch and the chlorophyll begins breaking down. The 4-minute boil is long enough to cook them through but stops well before the colour turns.
Mint goes in last because mint flavour evaporates fast in hot liquid. Adding it at the start of cooking gives a flat soup that tastes vaguely herbal. Adding it 10 seconds before blitzing - with the heat off - keeps the flavour bright and grassy.
Frozen versus fresh
This is the recipe that makes the strongest case for frozen peas over fresh. Commercial frozen peas are picked, podded and frozen within 2 hours of harvesting; the sugar-to-starch conversion that ruins peas is paused. Supermarket fresh peas in their pods have been in transit for 3-5 days; the sugar conversion is well underway and the texture is starchy.
The only fresh peas that beat frozen are peas from your own garden, picked the same morning. If you grow peas, this is the soup to make on harvest day. Otherwise, reach for the freezer.
Pea pods make excellent stock
Do not throw away the pods if you are using fresh peas. Simmer the empty pods with onion peelings, a bay leaf and a peppercorn for 30 minutes, strain, and you have free pea-pod stock that takes this soup from good to genuinely brilliant. The pod stock has more flavour than any cube and costs nothing.
Serving and pairings
Serve hot in shallow bowls, finished with a swirl of creme fraiche, a few whole reserved peas, small mint leaves and a thread of good olive oil. Crusty sourdough toast and butter is the classic accompaniment.
For a chilled summer version, plunge the saucepan into an iced water bath as soon as the soup is blitzed. Chilled pea and mint soup is a brilliant starter on a hot July evening.
Frequently asked questions
Are frozen peas as good as fresh for pea soup?
Yes, often better. Commercial frozen peas are picked and frozen within 2 hours of harvesting, locking in sweetness and colour. Supermarket fresh peas in pods sit in transit for 3-5 days and lose sugar to starch by the day. The exception is peas from your own garden picked the same morning - those beat frozen. Otherwise frozen wins on flavour, colour, time and price.
Why is my pea soup grey instead of bright green?
Overcooking is the cause. Peas hold their bright green colour for about 4-5 minutes at the boil. After 6-7 minutes the chlorophyll breaks down and the soup turns olive grey. Boil for exactly 4 minutes, then take off the heat. Reheating an already-cooked pea soup also dulls the colour; serve fresh from the pan or chill quickly in an iced water bath.
Can I make pea and mint soup vegan?
Yes, easily. Replace the butter with 2 tbsp olive oil, swap the dairy cream for oat cream or cashew cream (60g cashews soaked 4 hours then blitzed with 100ml water until smooth). The flavour is slightly less rich but still excellent. Coconut cream changes the flavour profile too much and overrides the mint.
What pairs well with pea and mint soup?
Crusty sourdough toast with butter is the classic pairing. For a more substantial meal, serve alongside a simple goats cheese tart or a smoked salmon and cucumber sandwich. As a starter for a Sunday lunch it pairs with roast lamb (the mint reflects the mint sauce on the main course). A glass of crisp Sauvignon Blanc cuts the cream beautifully.
Lawrie has been gardening in the West Midlands for over 30 years. He grows his own veg using no-dig methods, keeps a wildlife-friendly garden, and writes practical advice based on real UK growing conditions.
