The coffee they serve in Turkey is so robust I don’t think I slept more than three hours any of the nights I stayed there.
Which of the following is the meaning of the word “robust” as used in the sentence above?

The correct meaning of the word is “strong”, as it portrays the idea that the coffee was so caffeinated it made it impossible for this person to sleep.
“Sweet” is not the correct meaning, as it would suggest that flavor has something to do with the effect on your sleep.
“Watery” is not the correct meaning, as it would suggest that the coffee would not be strong enough to keep someone awake at night.
“Hot” is not the correct meaning, as it would suggest that temperature has something to do with caffeine or the coffee’s effect on your sleep.