What are the ingredients in a shortbread recipe?

The ingredients in a typical shortbread recipe include:

- All-purpose flour: This is the base of the shortbread.

- Butter: Butter is responsible for the rich, buttery flavor of shortbread.

- Sugar: Sugar adds sweetness to the shortbread.

- Salt: Salt enhances the flavor of the shortbread.

- Vanilla extract: Vanilla extract adds a subtle vanilla flavor to the shortbread.

Some recipes may also include additional ingredients, such as chocolate chips, nuts, or dried fruit.