Rough surface and slow drying are the real signs of quality
Look for three things: bronze die extrusion, slow drying, and 100% semolina.
The most obvious sign is the surface. Cheap pasta is extruded through Teflon dies, which leaves it smooth and shiny. Good pasta uses bronze dies, which scrape the surface as it forms, creating a rough, matte texture. That roughness grabs sauce. You can actually feel it with your fingers. If the spaghetti feels slippery like plastic, it’s cheap.
Color matters too. A deep amber yellow (not pale, not bright neon) means good durum wheat semolina. Pale pasta often comes from softer wheat or too much water in the dough. The semolina should be the only ingredient besides water. Some brands add egg or spinach, but for plain spaghetti it’s just durum semolina and water. Anything else (preservatives, artificial colors) is a red flag.
Drying method is harder to check but worth knowing. Slow drying at low temperatures (under 60°C, sometimes 48+ hours) preserves flavor and structure. Fast high-temperature drying (common in cheap pasta) saves time but makes the pasta brittle and starchy, and it loses
