Marinate the shrimp with ketchup, haldi and chilli powder for 2 hrs. In a flat pan, bring water to boil and add the noodles. Cooking time for different type of noodles vary so make sure to keep a close eye and do not overcook.
Drain the water and wash noodles under cold running water.
Add some ketchup, a little salt and keep aside.
In a non-stick pan add oil, crushed garlics and saute for a few mins till light brown.
Then add onions and saute till light brown.
Add the shrimp, and if you are using the raw ones, cook them well.
Then add mushrooms and cook for a few minutes till mushrooms look soft.
If u want the noodles spicy, add some red chilli powder and stir.
Add hing and finally add the noodles and stir everything well.