How do you say I know how to cook in spanish?

Here are a few ways to say "I know how to cook" in Spanish, with slight variations in formality and nuance:

Formal:

* Sé cocinar. (This is the most direct and common translation.)

* Conozco la cocina. (This literally translates to "I know cooking," emphasizing your knowledge of the art.)

Informal:

* Sé cocinar. (This works in both formal and informal settings.)

* Sé hacer de comer. (This literally translates to "I know how to make food," emphasizing the practical aspect of cooking.)

* Sé preparar comida. (Similar to the above, but more direct and emphasizes the act of preparing food.)

You can also add a bit more context by saying:

* Sé cocinar algunos platos. (I know how to cook some dishes.)

* Sé cocinar bien. (I know how to cook well.)

The best option for you will depend on the context and your relationship with the person you're speaking to.