Boil potatoes with skin on until cooked thoroughly. Drain well, and let cool.
Use only the young parts of the green onions, and cut them finely.
Remove skin from potatoes, and cut into slices about 1/2 cm thick. Mix well with chopped parsley and chopped green onions.
Combine lemon juice, minced garlic and salt, add some pepper, and pour in olive oil slowly, stirring it all the time.
Pour well combined dressing over potato slices and mix well. Add extra salt if preferred.