Indian Street Food: Pav Bhaji

Name: Indian Street Food: Pav Bhaji
Ingredients: 8 Pavs/ Dinner rolls; 3 medium potatoes – boiled & mashed; 1/2 cup green peas; 1 cup chopped cauliflower; 2 carrots – chopped; 1 medium capsicum – finely chopped; 3 tomatoes chopped; 2 red onion – finely chopped; Pinch of sugar; Salt to taste; 1 1/2 – 2 tbsp pav bhaji masala (Depends on the brand. Add less first, taste and then add); 1/2 tsp red chilly powder; 1/4 tsp turmeric powder (Optional); 1-2 tsp lemon juice; 3 tbsp – Oil; 2 tbsp – butter