Soak the dry kashmiri red chilies in 2 cups of warm water for 2-3 hrs. Alternatively you could boil them in hot water for 8-10 mins.Strain the water and grind the red chilies with ¼ th cup of garlic until smooth. Add little water if required.Take oil in a pan until it's hot. Place first on high heat then reduce the heat to medium. Add chopped garlic and ginger. Saute until the raw smell disappears.Add the shallots, sugar and salt. If you are suing tomato puree add them now and cook for 5-6 mins.It's time to add the red chili paste with little water. Keep the mixture stirring at all point of time.Finally add salt, sichuan pepper, soy sauce and vinegar. Combine all nicely. Simmer for 2-3 mins more or until it starts leaving oil. Allow to cool down then store them into the deep freezer, use as required.Serve the schezwan sauce with fried rice or momos.