Italian 00 flour vs semolina
Both Italian, both bought for pasta and pizza, and different in every respect that matters — one is a grind, the other is a different wheat.
The short answer
The confusion comes from the numbering, which describes two different things. “00” is an Italian grade for how finely a soft wheat flour is milled and how much bran is left in it — it says nothing about protein, and 00 flours are sold across a wide protein range for quite different jobs. Semolina is not a grade at all: it is coarsely milled DURUM wheat, a different and much harder species, and its coarseness is deliberate. So 00 is a fine powder that hydrates fast and gives a soft, extensible dough, and semolina is gritty, absorbs slowly, and gives a firm dough with a distinctive yellow colour and bite. They are not substitutes, and a pizza recipe calling for one will not work with the other.
Where they differ
| Dimension | First | Second |
|---|---|---|
| What the name describes | A milling grade — fineness and extraction, not protein. | A wheat species and a coarse grind. |
| The wheat | Soft or common wheat. | Durum — harder, and a different species. |
| Texture in the hand | Fine, silky, almost powdery. | Gritty and granular. |
| Hydration behaviour | Absorbs quickly. | Absorbs slowly — a rest is not optional. |
| Colour | White. | Yellow, from carotenoid pigments in the durum. |
| Protein | Varies widely by product; the grade does not tell you. | High, but the gluten it forms is short rather than elastic. |
Why “00” on the bag tells you less than people think
The Italian numbering — 00, 0, 1, 2, integrale — is a scale of extraction and fineness. A 00 flour is the most refined and the most finely ground, with the least bran and germ left in it.
What it emphatically does not encode is strength. A 00 sold for fresh pasta and a 00 sold for a long-fermented Neapolitan pizza can differ in protein as much as a UK plain flour differs from a bread flour, and a recipe that says only “00 flour” has told you the grind and not the thing that decides whether the dough will hold up.
The useful habit is to read the protein figure on the bag rather than the grade, exactly as BakeHQ recommends for every other flour.
Related
Compares
A milling grade against a different wheat species — and why the number on an Italian bag says nothing about strength.
A milling grade against a different wheat species — and why the number on an Italian bag says nothing about strength.