Soak the red chilies in hot water for half an hour and grind it to a paste with a tablespoon of water.
Heat a pan and add oil, chopped garlic and ginger pieces. Cook until the raw flavor is gone.
Then add the ground red chili paste with ½ cup water and cook it further for 5 minutes on a medium flame.
Now add the other ingredients one by one (Vinegar, soy sauce, salt, sugar, ground pepper, tomato ketchup)
Mix everything together and cook until the sauce thickens (it takes 10 minutes).
Once the oil separates and floats on top which means the Schezwan sauce is ready, now allow the sauce to cool and then transfer it to an airtight container and store it in refrigerator for using.
You can use the sauce in noodles, rice, appetizer, etc.,