This is one of my family's favorite snacks. We love to eat grapefruit the same way, sometimes adding a bit of sugar if it's bitter. We often break the grapefruit in pieces and just take small amounts the salt-chili when we eat it with our fingers.

Do you have a grapefruit tree on your land? Eating sour fruits like this is very strange in some parts of the world. When I visit the USA and eat jicama with chili and salt, my friends look at me like I'm crazy.