Durum Flour: Fine Milling, Semolina and What a Recipe Means
Durum flour is flour made from durum wheat.
Durum flour is flour made from durum wheat. In many English-language baking references, it describes a finer product than the granular semolina milled from the same wheat.
The distinction is useful when a bread or pasta recipe asks specifically for durum flour. Buying anything with durum on the front of the bag may still leave you with a different grind.
Wheat type and particle size are separate details
Durum identifies the wheat. Semolina and flour descriptions provide information about the milled product. Italian labels can add terms such as semola rimacinata, indicating a remilled product, so read the grind and intended use rather than translating every name to the same English phrase.
King Arthur identifies its durum flour as finely textured and suitable for pasta and bread. Its semolina guidance explicitly distinguishes finer durum flour from coarser semolina.
Why the recipe's specification matters
A finer flour and a granular product do not necessarily incorporate liquid or create the same dough texture at the same rate. Start with the product the recipe names, particularly when learning a new bread or a hand-shaped pasta.
If substituting, use guidance from that recipe or a formula developed for the available flour. A general statement that both begin as wheat does not tell you how the finished dough will handle.
Check the full flour blend
Some bread formulas combine durum with another wheat flour. King Arthur's professional semolina-bread formula, for example, lists durum and another flour separately. Those proportions are part of the recipe's structure.
Do not convert a mixed-flour dough to all durum without accounting for the change. The same applies when replacing a durum portion with all-purpose flour: the method and desired texture still matter.
A useful purchasing question
If the label is unclear, ask whether the product is a coarse semolina or a fine flour and what the mill recommends it for. That answer is more useful than choosing by colour alone.