I've got an app on my phone that reads bar codes.
Now, that dressing of yours will have a bar code, you scan the code with your camera in your phone, and it'll tell you almost immediately what it is, where it was made how much it costs, how much it costs everywhere else near you so you can see if you're getting ripped, it tells you loads of things about that product.
Dead handy and it's free!
What it won't tell you though, is how much dynamite there is in it.
And for a bottle of dressing that costs a poxy few $, I'd say a new top, a new rug, a new outfit, and a new ceiling would be well worth you not going to the national press to tell them how your life was destroyed in a careless moment when you shook this bottle of nitro glycerine a little carelessly....
Piss off ya sarcastic get.