In a large pot over medium heat, add the oil, onion, and garlic. Saute for 5 minutes, or until softened.
Add the cumin, paprika, coriander, turmeric, sugar, and pepper. Saute, stirring frequently, for 3 minutes longer.
Add the mung beans, stir well, and cook for 2 minutes longer.
Add the broth or water and turn the heat to high.
Bring to a boil, then reduce the heat to a simmer.
Simmer for 50 minutes, or until the mung beans are tender.
Turn off the heat, add the lemon juice and salt to taste.
Enjoy!
Video
Notes
I find around 1 teaspoon of salt to be perfect, but you should start at 1/2 teaspoon and go up from there until you are happy with the salt level for best results.