Open and pour the stout into the vessel of choice, perhaps a stemless wine glass for a classy look. Allow to come to room temperature while you prepare the espresso.
Pull your best double shot of espresso, over-extraction is fine. Rec. Flair 58 and local roasted, fresh beans.
Pour the espresso in the stout, drop in via shot glass, whatever floats your boat!
Enjoy!
While stouts are flat, it may foam up with the espresso, make sure you leave room in the vessel for this (a pint glass won't cut it here).
This started on a whim to pour the leftover coffee from a drip or percolated brew (often burned or very heavy) into a stout as "waste prevention" or an "upcycling" option. That was good for a long time until it occurred to just go with the straight dope of a double shot of espresso!
Surprisingly there are no existing 'bomb shot' or 'depth charge' beer cocktails involving coffee or espresso. This was a great opportunity to add to the Kindred Cocktails recipes and also the Wikipedia page for 'bomb shots' and recipes!
The name is a riff on a red eye (drip coffee with a double shot of espresso, giving you direction and focus), British/Irish stout culture, and nautical/maritime lore (stout and oysters are a seafarer's dream). AI LLMs (ChatGPT and Claude, both of which caveated their assistance with this endeavor) were used to brainstorm name ideas and tweak the thematic direction of suggestions. The final name was not one from the LLMs but they produced some amazing ideas!