In a saucepan, heat 2 tbsp oil. Combine all ingredients for the paste except the vinegar. Cook it until fragrant.
After they have cooled down, place them in a mixing jar. Mix in vinegar. Marinate the mutton in the paste for at most 2 hours. The best flavor is when it’s marinated for at least 2 hours.
After this, Heat four tablespoons of oil in a saucepan. Add the chopped onions to the pan and cook until they start to brown.
Mix the marinated mutton. Stir occasionally for 5 minutes. 2 teaspoons of salt and sugar are added.
Bring to a boil. Keep the heat on medium-low for 45 minutes or until the mutton becomes tender. Stir frequently to ensure that the button isn’t sticking to the bottom.