1. Heat 2 tsp oil in a pan

2. Add onion, 1/4 tsp garlic paste, salt and 1/4 tsp pepper powder

3. Fry till onion are brown
4. Remove from fire and keep aside

Method for Sauce:

1. Dissolve cornflour in 2 tbsp water

2. Add 2 tbsp oil in same pan

3. Add tomato puree, cornflour paste

4. Stir continuously so no lumps are formed

5. Add garlic paste and all powders
6. Add celery and grated cheese
7. Cook till sauce is thick
8. Remove from fire and let is cool

Method for Sandwich:

1. Roast the potatoes slices in oven or deep fry

2. In a skillet brown the sausages
3. Warm the rolls for 5 min
4. Split the rolls in to halves

5. Apply butter on inner sides of rolls

6. Put lettuce leaves on 4 halves of rolls

7. Top it with sausages evenly on all 4 halves

8. Spread sauce over the sausage layer

9. Top it with brown onion and grated cheese (evenly)

10. Finally cover with the remaining halves

11. Serve with wafers