A mi hermana le gusta poner cebollino en la tortilla.

My sister likes to put chives in the omelette.

Breakdown of A mi hermana le gusta poner cebollino en la tortilla.

• gustar: to like
• en: in
• mi: my
• a: to

Questions & Answers about A mi hermana le gusta poner cebollino en la tortilla.

Why does the sentence use both a mi hermana and le? Don’t they both mean to my sister?

Yes, they both point to the same person, but they do different jobs.

• a mi hermana names the person clearly: to my sister / as for my sister
• le is the indirect object pronoun that Spanish normally uses with gustar

With gustar, using the pronoun is standard:

• Le gusta... = She likes... / It pleases her...

Then a mi hermana is added to clarify or emphasize who le refers to.

So this structure is very normal:

• A Juan le gusta el café.
• A mí me gusta leer.
• A ellos les gusta viajar.

Spanish often uses both the pronoun and the full noun phrase together.

Why is it gusta and not gustan?