Food & Ingredients
How does grain become flour and bread?
The short answer
Cereal grains grow in ears or other seed heads. After harvesting, they are cleaned and ground in a mill. Flour and other ingredients become dough, and baking turns it into bread. The steps are an example, not one recipe for every bread.
See how it works
Arrows show a direction or change. Sizes and distances are simplified. Read in order; each explanation belongs to the picture above it.
1. Harvest grain
A wheat ear holds many grains. Each contains parts including the starchy centre, germ and outer layers. Unwanted materials are removed before milling.
2. Grind in a mill
Rollers or other milling tools break up grains. Sieves separate particles of different sizes. Flour therefore comes from grain, not empty stalks. Wholemeal flour also contains the outer grain layers and germ.
3. Mix dough
Water combines with flour components. Bread may also use salt, yeast or sourdough. Kneading and resting help develop the desired structure and airiness.
4. Bake through
Oven heat sets the dough structure and forms an outer crust. The softer interior is the crumb. Bread must cool sufficiently before eating.
An imagined Wusel scene
Puschel and Flauschi investigate
Puschel holds a wheat ear beside flour in the museum and puzzles over the difference. Flauschi places grains between them. Adding a mill now joins the parts of their picture story.
Word help
- Mill
- Equipment that breaks up grains and processes the milled particles.
- Crumb
- The interior beneath a loaf’s crust.
Your activity
Order cards showing wheat ear, grain, mill, flour, dough and bread. Explain each change. Compare crust and crumb on finished bread if it suits your family’s diet.
Quiz: understand the idea
Which part of a wheat plant is milled into flour?
Choose a), b) or c), then explain your choice.
- a)The empty husks and stalks without the grains.
- b)The whole unsorted ear together with its straw.
- c)The cleaned grains.
Show the explanation
Correct: c): The cleaned grains.
Grains supply the flour components. Straw from stalks is not the same starting material.
Try a new example
What does wholemeal flour mean?
Choose a), b) or c), then explain your choice.
- a)It contains the components of the cleaned whole grain.
- b)A dark baked crust alone makes it wholemeal.
- c)It contains only the pale inner starchy centre.
Show the explanation
Correct: a): It contains the components of the cleaned whole grain.
Wholemeal describes the grain components used. Dark colour alone does not prove flour is wholemeal.
Explore in more detail
Here you will find longer explanations and further details. You can explore them together.
More to discover
White and wholemeal
Wholemeal flour retains outer grain layers and germ too. White flour mainly contains the inner starchy part. Colour and fineness also depend on grain and processing. A photo alone is not a reliable ingredients list.
Pictures and sources for adults
Sources
Museum scene: AI-generated illustration, checked separately from the factual diagram. The diagrams simplify the process. Editorial source check: 19 October 2026.