Complete meal in one bowl, with warm and rich flavors.
Using sauté setting – add oil to pot, along with onions, celery, and carrots. Cook for about 5 minutes, stirring frequently.
Add salt, sugar, garlic, ginger, vinegar, and curry powder – cook for 1 minute, stirring constantly to fully incorporate curry.
Then add potatoes, lentils, 6 cups of broth, and tomatoes. Mix well.
Lock lid and cook for 7 minutes at high pressure. Once time is complete, quick-release pressure.
Then add 2 cups of broth and mix well. (This will help stop the potatoes from over-cooking.)