Name: Fregula con arselle
Prep time: 25 min
Cook time: 30 min
Total time: 1 h 55 min
Cuisine: Italian, Sardinian
Ingredients: 1 kg small live clams, arselle or another good small clam; 2 tbsp coarse sea salt, for purging water, not for the finished dish; 100 ml dry white wine; 300 g Sardinian fregula, medium grain; 3 tbsp extra-virgin olive oil; 2 cloves garlic, 1 crushed, 1 finely chopped; 150 g tomato passata; 1 tbsp tomato concentrate; 750 ml hot water or light unsalted fish stock, approximately; 1 small pinch dried chilli, optional; 3 tbsp flat-leaf parsley, finely chopped; to taste fine sea salt, only after tasting the clam liquor

Fregula con arselle: wide hero view of toasted fregula pearls in a tomato-tinted broth with opened clams and parsley

Prep25 minutes

Cook30 minutes

Total1 h 55 min

Yield4 servings

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The dish

About Fregula con arselle

Fregula, often written fregola outside Sardinia, consists of small hand-formed semolina pearls that are traditionally toasted. With arselle, the local clams, the pasta is cooked so it absorbs the shellfish liquor rather than being boiled separately and sauced afterward.

Clam handling determines the quality of the dish. The shells must be clean, live and purged of sand; the cooking liquor should be filtered through a fine sieve before it is returned to the pan.

Tomato is used with restraint. The photographed form has a clear red-orange broth, so this version uses a modest amount of passata and concentrate—enough to colour and round the liquid without masking the clams.

The final texture belongs between soup and dry pasta. Fregula continues to absorb liquid after the heat is turned off, so the pan should look slightly looser than the desired serving consistency.

Technique

Three things that matter

Protect the clam liquor. It is the main seasoning; filter it carefully so sand never reaches the final bowl.
Add salt last. Clams are naturally saline, so the dish should be tasted only after their liquor has gone back in.
Stop while still brothy. Fregula keeps swelling after cooking and can turn stodgy if reduced too far.

Cook the dish

Ingredients

Everything needed to prepare the dish, arranged for fast scanning before cooking.

Clams

1 kgsmall live clamsarselle or another good small clam
2 tbspcoarse sea saltfor purging water, not for the finished dish
100 mldry white wine

Fregula base

300 gSardinian fregulamedium grain
3 tbspextra-virgin olive oil
2 clovesgarlic1 crushed, 1 finely chopped
150 gtomato passata
1 tbsptomato concentrate
750 mlhot water or light unsalted fish stockapproximately
1 small pinchdried chillioptional
3 tbspflat-leaf parsleyfinely chopped
to tastefine sea saltonly after tasting the clam liquor

Step by step

Method

Clean and open the clams

Purge the clams. Rinse the clams and soak them in cold salted water for about 1 hour in the refrigerator, lifting them into fresh water once if much sand collects. Rinse again.
The bottom of the bowl should show little or no grit after the final rinse.
Discard damaged shells. Throw away cracked clams and any open shells that do not close when tapped.
Only intact, responsive clams should go into the pan.
Steam open. Warm 1 tablespoon olive oil with the crushed garlic. Add clams and wine, cover and cook over high heat 3–5 minutes, shaking once, until the shells open.
Most shells should open quickly; do not keep cooking already-open clams.
Filter the liquor. Lift the clams out. Strain the pan liquor through a fine sieve into a jug. Discard any clams that remain closed after cooking.
The reserved liquor should be clear of visible sand.

Cook the fregula

Build the tomato base. In the same cleaned pan, warm the remaining oil with chopped garlic and chilli for 30 seconds. Stir in passata and tomato concentrate and cook 3 minutes.
The tomato should darken slightly and lose its raw aroma.
Add fregula and liquid. Stir in the fregula, filtered clam liquor and enough hot water or stock to cover generously. Simmer uncovered, stirring frequently.
The pan should maintain a steady risotto-like simmer.
Adjust as it absorbs. Add more hot liquid in small amounts as needed and cook until the fregula is tender with a slight bite, typically 10–14 minutes depending on size.
There should still be a shallow layer of glossy broth around the pearls.

Return the clams and serve

Warm the clams through. Return the opened clams for the final 1–2 minutes, reserving a few in shell for presentation if desired.
The clam meat should be hot but not toughened by prolonged simmering.
Finish with parsley. Turn off the heat, stir in parsley and a small drizzle of olive oil, then taste before adding any salt. Rest 2 minutes.
The finished dish should be moist and spoonable, not dry.

Practical guidance

Purging time

If clams are sold already depurated, a shorter cold rinse may be enough; follow the fishmonger’s guidance and keep them chilled.

Liquid control

Different fregula sizes absorb at different rates. Keep extra hot water ready rather than committing all liquid at once.

Serving

Serve immediately in warm shallow bowls because the pasta continues absorbing broth after it leaves the pan.

Troubleshooting

There is grit in the bowl. The clam liquor was not filtered finely enough or the clams were not adequately purged.
The fregula is dry. It absorbed the liquid while resting. Loosen with a splash of hot water or unsalted stock just before serving.
The clams are rubbery. They were simmered too long after opening. Remove them promptly and return only at the end.
The dish is too salty. Salt was added before tasting the clam liquor. Use unsalted added liquid and season only at the end.

Nutrition per serving

Serving size: 1 of 4 bowls
Calories: approximately 510 kcal
Carbohydrates: 65 g
Protein: 27 g
Fat: 13 g
Fibre: 4 g
Sodium: 980 mg

Shellfish salinity varies widely; sodium is only an estimate.

Allergens and food safety

Contains wheat/gluten and molluscan shellfish.

Buy live shellfish from a reputable cold-chain source; discard cracked clams and open clams that do not close when tapped before cooking.

Discard clams that fail to open during cooking. Keep shellfish chilled until use and refrigerate leftovers promptly.

FAQ

What is the difference between fregula and couscous?

Both are semolina products, but Sardinian fregula is rolled into larger irregular pearls and traditionally toasted, giving it a distinct texture and flavour.

Should the clams be shelled?

Some may be shelled for easier eating while several are left in their shells for presentation; either way, the filtered clam liquor is essential.

Is the final dish soupy?

It should be moist and brothy rather than dry, but not as liquid as a soup.

Final note

What matters most

Result: Tender toasted fregula suspended in a light tomato-clam broth with juicy clams and fresh parsley.
Key: Filter the clam liquor meticulously and stop cooking while the fregula is still slightly looser than the final desired texture.