To make your own teriyaki sauce is to question everything you thought you knew about the watery, flavorless sadness that's spooned over every shopping mall food court salmon (regardless of the mall).
Here's the thing no one tells you about homemade teriyaki sauce: It's about as easy as making tea. Real teriyaki sauce doesn't try to mask the flavor of the salmon it's covering—it just makes the fish taste like the best version of itself.
All you have to do is sear some salmon fillets until they've got that whole crispy skin thing going, then bring a mixture of soy sauce, sake, and mirin (sweet Japanese rice wine) to a bubble in the same skillet until they reduce into a glossy, delicate sauce. After a couple more minutes, the sauce will become syrupy, the salmon will be just cooked through, and all you'll need is a side of Steamed Japanese Rice.