Flour Power: A Guide to Using “00” vs. Semolina for Perfect Pasta Dough

The term “00” (doppio zero) is an Italian legal grade of soft-wheat flour, defined mainly by how refined it is: at most 0.55% ash (the mineral content left after burning) and at least 9% protein, the most refined of the grades [2]. In practice it is also the finest grind, often compared to talcum powder, with a protein content similar to all-purpose flour [1].

Why Use “00” Flour?

Its fine grind makes a dough that is highly workable and forgiving [1], so it is easy to roll into paper-thin sheets. Most “00” flours available in the U.S., such as the widely popular Antimo Caputo, are made from soft wheat.

• Best for: Delicate shapes like ravioli, tortellini, and thin ribbons like tagliatelle or pappardelle.
• The Trade-Off: Egg doughs made with lower-protein white flour cook up softer and are easier to work [1]; for more chew, add semolina.

Semolina is a coarse flour milled from durum wheat, which is a “hard” species of wheat. Unlike soft wheat “00,” it is golden and higher in protein [1]: Italian law requires at least 10.5% for semola [2], and the semolina samples in a 2024 study of commercial spaghetti had 13.3% to 14% [3].

The Role of Durum Wheat

Durum wheat’s higher protein makes a sturdier dough with more chew, which takes more effort to roll out [1]. This is why semolina is the standard for commercial dried pasta: in Italy, dried pasta must be made from durum wheat semola (or semolato) and water [2].

• Best for: Hearty, hand-shaped pasta like orecchiette, cavatelli, or pici.
• Pro Tip: Look for “Semola Rimacinata,” which is re-milled semolina. It keeps the strength of durum wheat with a finer texture; America’s Test Kitchen recommends this fine semolina and says conventional semolina is too coarse [1].

Deciding between these flours depends on your equipment and your desired sauce pairing.

The legal definitions come from Italy’s flour and pasta rules [2]. If you are just starting, you may want to check out our How to Make and Cook Homemade Italian Pasta to see these flours in action.

Many cooks blend the two flours to get a dough that is both easy to work with and texturally satisfying. King Arthur, for example, sells a pasta flour blend that combines durum flour for strength, semolina for color and texture, and all-purpose flour for a touch of softness [4].

There is no standard ratio. A practical starting point is a 70/30 mix (70% “00” to 30% semolina), or a 50/50 mix for more bite. The “00” keeps the dough silky and easy to roll, while the semolina adds chew and a rougher surface that helps sauce cling to the noodle; the more semolina you add, the more effort the dough takes to roll out [1].

For more technical advice on hydration and mixing, see our insider tips for perfecting homemade pasta dough.

1. The Dough is Too Elastic: If the dough keeps snapping back when you try to roll it, the gluten needs to relax. Wrap it in plastic and let it rest for at least 30 minutes [5].
2. The Surface is Pebble-Like: This often happens with bleached all-purpose flour, which makes pitted, pebbly pasta. If using semolina, choose finely ground “rimacinata,” since conventional semolina is too coarse [1].
3. Sticky Dough: Humidity plays a role. Before adding more flour, let the dough rest for a few minutes so the flour can absorb the liquid, then dust it lightly a little at a time.

• “00” Flour is the most refined Italian grade of soft-wheat flour and is very finely ground. It creates silky, tender doughs ideal for egg-based, rolled pastas like ravioli.
• Semolina is a higher-protein, coarse flour from durum wheat. It provides “bite,” structural strength, and is the standard for water-based, extruded, or hand-shaped pastas.
• Blending works well. Use a mix of both (e.g., 70% “00” and 30% Semolina) to get a dough that is easy to roll but has more bite when cooked.
• Resting is mandatory. No matter the flour choice, rest the dough for at least 30 minutes to relax the gluten for easier shaping [5].

Action Plan

1. Choose your shape: If making Lasagna or Fettuccine, buy “00”. If making Orecchiette, buy Semolina.
2. Scale it: Weigh your ingredients (100g flour to 1 large egg is a common starting point).
3. Knead and Rest: Knead until the dough is as smooth as a post-it note, then rest for at least 30 minutes at room temperature.
4. Cook to “Al Dente”: Use plenty of salted water and reference our Comprehensive Guide to Perfect Pasta Cooking for timing.

Homemade pasta is less about the “perfect” recipe and more about understanding how your flour handles moisture. Once you master the “00” vs. semolina balance, you can tailor your pasta to any sauce or occasion.