In a stock pot, sauté the chopped spring onion in the oil over medium heat for 8-10 minutes. Add spinach and 1 1/3 cups of water and cook until the spinach wilts, about 5-7 minutes. Add rice and 5 1/4 cups of water, bring to a boil, and cook for 15 minutes, stirring occasionally. Stir in lemon juice and salt, cook for another 5 minutes and remove from heat. Stir, cover, and let sit for 20 minutes until the dish "melds."
Serve with wedges of lemon and freshly ground pepper.