Food Question...Spicy purple vegetable in Cancun, Mexico?

Question

Recently my wife and I visited Cancun, Mexico for our honeymoon. They had a dip for the tortilla chips that was onions chopped up with a purple type vegetable. The dip was very spicy. I wanted to find out if anyone knows what the purple vegetable normally used is and what makes it spicy.

Thanks in advanced!

Answer 1

purple onion mayb????

Answer 2

its a common ingriedient in Yucatan food is purple onions seemed in Chile Habanero and vinegar plus Oregano,

Answer 3

Click the link below and mix up a batch of the recipe there and see how close it comes to matching what you had.  It's called Pico de Gallo (pee . ko. day . gah . yo)-- literally=the beak of the rooster.  It's found on just about every Mexican restaurant table.