Gravy!

MSG. Adds a whole new dimension that everyone loves but not everyone notices. Also its usage divides people into camps.

Table Salt. I typically work on the stereo or spacial field the very last in the mixing process.

Extra-virgin olive oil. You can add a little bit to the ingredients individually, or to the whole mix, or even (don’t come for me, mastering engineers) drizzle a little of the good stuff on the finished meal.

The amount of salt used.

Salt

Roux. It thickens the mix up.

Sazon

It's the sauce that envelopes everything. Too much and everything is drowned out, too little and the dish is dry.

Definitely vinegar or acidity