Doughs & batters
Durum Extruded Pasta
Pasta secca · A family of dried pasta shapes produced by forcing a stiff, hydrated durum wheat semolina dough through dies under pressure. The hard gluten matrix formed during extrusion and subsequent slow drying creates pasta with high tensile strength, low starch damage, and resistance to overcooking — the structural and sensory ideal against which all fresh pasta is measured.
The formula
100:33–40:1–2 (semolina:water:salt)
Semolina-to-water ratio is deliberately low (33–38 % hydration), yielding a stiff, granular dough unlike egg pasta. For 1 kg semolina: 330–380 g cold water, 10–15 g fine salt. Salt is optional and added dissolved in water to avoid inhibiting gluten development. No fat, no egg. Semolina particle size should pass a 250–300 µm sieve for smooth extrusion.
Identity
- Made from durum wheat (Triticum durum) semolina — never common wheat flour for true pasta secca
- Hydration ratio deliberately low (33–38 %) — stiff, granular dough, not smooth or extensible
- Extruded under pressure, not rolled and cut
- Dried slowly at low temperature (40–50 °C for 10–14 h) — preserves protein structure and golden color
- Cooks to a firm, resilient bite (al dente) with minimal starch leaching
Ingredients
| Base | Durum wheat semolina (rimacinata for finest texture) | Must be from Triticum durum, not common wheat. Rimacinata = doubly milled for smoother extrusion. |
| Liquid | Cold potable water | Cold water controls gluten development and prevents early gelatinization of surface starch. Hydration 33–38 %. |
| Binder | Salt (fine) | 1–2 % of semolina weight. Strengthens gluten slightly, improves flavor. Add dissolved in water — never dry into dry semolina. |
Method
- 1Combine semolina and salt (dissolved in water). Mix in a planetary mixer with paddle at low speed 3–5 minutes until no dry flour remains.Even hydration is critical; dry pockets create lumps that block dies and produce inconsistent shapes.
- 2Switch to dough hook. Knead 8–12 minutes until dough is smooth, cohesive, and holds together firmly when squeezed — not sticky, not crumbly.Full gluten development creates the elastic, cohesive matrix needed to extrude without tearing and to hold shape during drying.
- 3Rest the dough wrapped at room temperature 30–60 minutes.Relaxation reduces elasticity, making the dough feed into the extruder screw more uniformly and preventing die back‑pressure that deforms shapes.
- 4Extrude through appropriate die (bronze for rough surface, Teflon/smooth for smooth; shape determined by die). Maintain consistent feed rate and pressure.Pressure and die geometry determine shape fidelity and surface texture. Rough bronze‑die surface traps sauce better; smooth dies are faster and produce shinier pasta.
- 5Cut to length, portion onto drying trays. Dry in controlled environment: 40–50 °C, 60–70 % relative humidity, 10–14 h for long goods; 6–10 h for short goods.Slow drying below 50 °C preserves the hard vitreous endosperm structure, protein content, and golden color. Rapid high‑heat drying causes internal cracking and chalky cores.
Techniques that matter
Low‑hydration mixing
The 33–38 % water ratio produces a stiff, granular dough fundamentally different from egg pasta. Water is restricted to hydrate proteins without dissolving them; semolina granules remain partially visible.
Pressure extrusion
Unlike sheeted pasta rolled through gauges, extrusion compresses and orients gluten strands in the direction of flow, giving dried pasta its characteristic resilience and tensile strength.
Controlled slow drying
Below the gelatinization temperature of durum starch (~55–60 °C) and well below protein denaturation. Maintains the glassy, vitreous structure of durum endosperm that resists overcooking.
Bronze die vs. Teflon die
Bronze dies create microscopic roughness on the pasta surface (holds sauce mechanically). Teflon dies produce smooth, shiny pasta. Both are correct; they produce different textures.
Variations & derivatives
Pasta di semola rimacinataSouthern Italy (Puglia, Basilicata)
Made from doubly‑milled fine durum semolina (rimacinata). Even smoother extrusion, silkier surface. Traditional for orecchiette and Pugliese long goods.
Pasta di semola integraleItaly, modern artisanal
Substitute 20–30 % whole durum flour for refined semolina. Higher fiber, nuttier flavor, slightly lower tensile strength but still within the durum extruded family.
Pasta all'uovo secca (dried egg pasta)Emilia‑Romagna, industrial Italian
Add 2–3 whole eggs per 100 g semolina. Combines durum structure with egg protein. Still extruded, still dried, but richer and more tender than water‑based durum pasta.
Pasta di GragnanoGragnano, Campania
Dried pasta of the Amalfi coast region. Historically dried by sea breezes in the town's narrow streets. Protected geographical indication (IGP). Same durum extrusion principles, distinct microclimate drying tradition.
Used in these dishes
Substitutions
- Durum semolina → Hard wheat bread flour (high‑protein) — Will produce a passable extruded pasta but lacks durum's vitreous hardness and characteristic golden color. Texture will be softer and starch will leach more.changes result
- Durum semolina → Semolina rimacinata — Fine grind for smoother surface on bronze dies. Interchangeable by weight; rimacinata is simply the finer grade.
Troubleshooting
Pasta cracks or shatters during drying
Dried too quickly or at too high temperature (>55 °C). The surface dried and hardened while the interior remained moist, creating internal stress fractures. → Reduce drying temperature to 40–45 °C. Extend drying time. Ensure even air circulation around all pieces. For home drying: room‑temperature drying on linen towels 24–48 h works for small batches.
Pasta turns chalky or white inside when broken
Excessive starch damage from over‑mixing, over‑worked extrusion, or drying temperature that exceeded starch gelatinization. The interior starch gelatinized, then dried into an opaque, mealy structure rather than a glassy, translucent one. → Keep drying temperature below 50 °C throughout. Reduce kneading time. Ensure extruder barrel is not overheating from friction.
Pasta becomes gluey or overcookable (turns mushy rapidly)
Using common wheat flour instead of durum, or using refined common wheat with added color. Also caused by excessive hydration (>42 %) or under‑drying. → Use verified 100 % durum semolina. Keep hydration to 33–38 %. Dry to stable moisture content <12.5 % for safe storage.
Pasta sticks together when cooking
Pasta was not sufficiently dried before storage (moisture >12.5 %); surface starch gelled during cooking and fused neighboring pieces. → Ensure thorough drying. Stir pasta immediately after adding to boiling salted water. Use abundant water (1 L per 100 g pasta) to dilute surface starch rapidly.