Chopped jicama and avocado into 1 inch cubes.
Peel grapefruit and remove as much of the plithe (white stuff) as you can. Peel apart and slice into 1 inch pieces. Toss all 3 ingredients into a medium sized bowl.
Rough chop mint and add to bowl.
Using a cheese grater or knife, mince ginger as fine as you can and add to salad.
Add a little bit of salt all over the salad and mix. Taste to see if you need more. (It's always better to need add more than to add too much.)