What is all purpose flour made of?

All-purpose flour is made from wheat. Specifically, it's a blend of hard wheat and soft wheat.

* Hard wheat has a higher protein content, which results in a stronger gluten development. This is why all-purpose flour can be used for both bread and cakes.

* Soft wheat has a lower protein content, which makes it ideal for pastries and cakes where you want a tender texture.

The exact ratio of hard to soft wheat can vary depending on the brand, but the overall protein content is typically around 10-12%.

So, while it's simply "wheat flour", the blend of different wheat types makes it "all-purpose" and suitable for a wide range of baking needs.