Chestnut and Wild Fennel Soup (Minestra di Castagne)
A rustic Sardinian soup of peeled chestnuts and wild fennel, simmered with onion and celery and finished with butter.
Ingredients
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Instructions
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Peel the chestnuts. Score each one with a knife, blanch in boiling water for 2 minutes, then peel off both the outer shell and the inner skin.
Tip: Peel chestnuts while still warm—once they cool the inner skin sticks. -
Wash and roughly chop the wild fennel. Chop the onion, celery, and parsley.
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Heat olive oil in a large pot over medium heat. Add the chopped onion, celery, and parsley. Sauté for 5 minutes until softened.
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Add 2 liters of water, salt, and pepper. Bring to a boil.
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Add the peeled chestnuts and wild fennel. Reduce heat and simmer for about 1 hour, stirring occasionally. If the soup gets too thick, add more water.
Tip: The chestnuts should be soft enough to break apart when pressed with a spoon. -
Remove from heat and stir in the butter until melted. Serve hot.
Storage & Meal Prep
Refrigerate for up to 3 days. The soup will thicken as it sits—thin with water when reheating. Freezes well for up to 2 months.
Variations
- With Pancetta: Dice 100g of pancetta and fry it with the onion and celery at the start for a meatier version.
- Blended Version: Blend half the soup before serving for a creamier texture while keeping some chestnut pieces intact.
FAQ
Can I use regular fennel instead of wild fennel?
Yes. Use the fronds and some of the tender stalks. The flavor will be milder than wild fennel but still works well.
Do I need to soak chestnuts before peeling?
No. Scoring and blanching them briefly in boiling water is enough to loosen both shells and inner skins.
Can I make this soup ahead of time?
Yes. It reheats well and the flavors improve overnight. Add the butter fresh when reheating.