Cthu-Cola
Well, the bottle is kind of eldritch-looking. It’s the sort of eldritch-looking that one gets when somebody takes an actual eldritch concept and focus-groups it a few times. The bottle is blue-grey-black. There’s a vaguely squid-godlike being on the label. It tastes like carbonated sugar water with some odd, but tasty, flavorings and spices. And it absolutely glows when magically scanned. Blindingly so, in fact.
Getting Cthu-Cola to look that way took the Stiúrthóireacht na Faisnéise something like ten years and a carefully-classified amount of gold bullion (Cthu-Cola’s designers… do not take Euros, or indeed any other coinage that has iron in the mix), but the results are absolutely worth it. Even an unopened bottle will disrupt magical observations within five feet of it – but if you shake the bottle and let the spray fly you can paint an entire room, and thus make it impenetrable to scrying, magical communications, and astral vision for the next four hours. The military and espionage applications of such a thing need hardly be explained, provided that one believes that magic exists in the first place. Which most people, admittedly, do not. Which suits the Stiúrthóireacht na Faisnéise, and its sister organizations, just fine.
Cost: not very expensive at all, if you happen to have a good relationship with a secretive Irish military intelligence group, plus of course the necessary security clearances. Cthu-Cola is extremely expensive otherwise, and if you’re not discreet then probably somebody’s eventually going to stop by to discuss your possession of it.
The big problem with looking at the bottle is that it exists in multiple dimensions simultaneously…
An interesting read. One does not usually see Irish government/military used in these sorts of things, which is at once understandable and a bit odd.
That’s how you know that they’re good. 🙂