In a shallow pan or kadahi, heat ghee over medium heat. Add jeera. When it crackles, add haldi. Add tomato. If using puree, dilute in 1 tsp of water. Cook for 5 minutes.
Add potatoes. Cook on medium to low heat for 10 minutes, till they get soft. Add methi leaves. Cook for another 5 minutes, till methi leaves wilt. Put in a tbsp of water. Cover and cook for 5-10 minutes, till methi starts smelling fragrant. Add salt.
Mix aloo and methi well. Sprinkle with lemon juice and garnish with coriander.
I love the bitter, tangy aloo methi with green chilly raita.