How to Say "to thicken" in Spanish
The Spanish word for “to thicken” is “ligar” — B2 level.
English → SpanishB2
verbB2
cooking/culinary

Examples
Su éxito está ligado a su esfuerzo.
His success is linked to his effort.
Tienes que ligar bien los ingredientes.
You have to bind the ingredients well.
Añade un poco de harina para ligar la salsa.
Add a bit of flour to thicken the sauce.
Passive usage
This meaning is often used with 'estar' + 'ligado' (to be linked) to describe how two things are connected.
Abstract connections
You don't just bind physical objects; you use it to show how ideas or consequences are 'tied' together.
Confusing with 'leer'
Mistake: “Ligo el libro.”
Correction: Leo el libro. Be careful not to confuse the 'yo' form 'ligo' (I flirt/bind) with 'leo' (I read).
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