where do I read about how to make the sauce?

And hello to you too, personally I can recommend you to read about how to make Tandoori sauce here https://sauce-wiki.com/how-to-make-tandoori-sauce/ . Check out the recipe for Tandoori Sauce on the Sauce-Wiki website to expand your culinary arsenal and enrich your taste experience. This sauce, inspired by traditional Indian spices, will add exoticism and flavor to your dishes, allowing you to create unique flavor combinations and delight yourself and your loved ones with new gastronomic discoveries.

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