What's your secret ingredient that makes your version of a common dish better than anyone else's?
Mine probably isn't that secret these days, but almost every sauce I add nutritional yeast to. Curry, chilli, bolognese, it just makes them all better.
A few years ago I got a big shaker of just straight MSG crystals in the "ethnic foods" aisle of the grocery store, and I put it in so much stuff. It just makes everything taste better. Particularly anything umami
You can get that anywhere worldwide professional cooks shop. No, it's often not in grocery store in English speaking countries, but it's at the wholesaler in 3 lb jars and 10 kg buckets, and (one of the reasons) food tastes better in a restaurant. The other reasons are excessive sugar, fat, cream and butter of course.