In a large non-stick pot, over medium high heat, evenly spray cooking oil for 4 seconds. Add beef and pan sear on all sides; add garlic and ginger paste, salt, homemade Nihari masala and gram flour and sauté for 3 to 5 minutes.
Add 4 cups water and turn the heat to the highest setting; bring to a boil. Turn down the heat to the lowest setting, cover and simmer for 2 to 3 hours until beef is almost cooked.
In a small bowl, combine remaining water and whole wheat flour to make a fine paste. Add this paste slowly to the beef mixture and mix well removing any lumps.
Sprinkle paprika and garam masala on top and spray cooking oil for 4 seconds. Cover and cook for 1 ½ hour until beef is completely cooked and tender and the gravy thickens.
Finish Nihari by spraying cooking oil for 2 seconds and garnish with cilantro, ginger, jalapeño peppers and lemon wedges.
Warm the pita by sprinkling a few drops of water on the pita bread and heating on a pan or grill.
Enjoy Beef Nihari with warm whole wheat pita bread.