Flour

Flour was a powder created by grinding certain types of plants. It could be produced using stone grinding with a grain to produce flour. (PROSE: Set Piece ^[+]Loading...["Set Piece (novel)"])

By 2018, Salamander's Sun Store technology had turned Ukraine into "the grain field of the planet". Although a large area had been devastated just two years earlier, robot harvesters gathered fifty million tons of flour, and corn grew on both banks of the Dnieper River. (TV: The Enemy of the World)

In 2540 Earth Cargo ship C982 was transporting bulk flour. (TV: Frontier in Space ^[+]Loading...["Frontier in Space (TV story)"])

The space station the Warehouse had shelves which contained biscuits, flour, and non-perishable baked goods. (AUDIO: The Warehouse ^[+]Loading...["The Warehouse (audio story)"])

In bread

In France in 1871 Genevieve Thierry baked bread, she dusted flour into the pan. (PROSE: Set Piece ^[+]Loading...["Set Piece (novel)"]

On the Worldsphere saRa!qava used flour and yeast to bake bread. (PROSE: The Also People ^[+]Loading...["The Also People (novel)"])

In cakes

Cakes were a baked dessert, typically made of flour and eggs and often bearing some sort of frosting. (AUDIO: The Marian Conspiracy)

Whilst in 1893 the Eighth Doctor decided to bake a Lady Baltimore cake. It contained flour, along with butter, eggs, vanilla, raisins, and was covered in icing. (PROSE: Camera Obscura ^[+]Loading...["Camera Obscura"])

Other culinary uses

The Eleventh Doctor stopped a soup creature by thickening it with flour. (COMIC: In the Can)