This is the first time we've learned about the making of bloodwine, and seemingly the first confirmation that it's made from actual blood of some sort of worms (or worm-like plants?) grown in the ground.
The band near the beginning features an accordionist playing the same style of concertina Ron Taylor's Klingon chef played in DS9: "Playing God".
K'Ellara's "boob window" design was featured on Lursa and B'Etor starting in TNG: "Redemption".
They mention Martok fighting in a bar in the Ketha lowlands. Martok said this was where his family was from in DS9: "Once More Unto the Breach". We later saw the Ketha Province in Star Trek Into Darkness.
"Experience bij!" is a reference to the Star Trek: The Next Generation Interactive VCR Board Game. Whenever Robert O'Reilly's (non-Gowron) Klingon said a player would "experience bij" this meant they had to draw a card, usually resulting in something bad happening to them. https://www.youtube.com/watch?v=VjAvGNn20Y8
As mentioned above, Fek'lhr was a Klingon "devil" seen in TNG: "Devil's Due". There are legends of Klingons killing their gods (DS9: "Homefront"), so it's possible Kahless killing Fek'lhr is in reference to that.
Councilor Enaj, named only in the subtitles, is Jane spelled backwards.
I guess I'm saying the obvious here, but Boimler's transfer was to the Titan starting in LD: "No Small Parts" and lasting through LD: "Kayshon, His Eyes Open".
Consistent with earlier episodes of Lower Decks, Klingon blood is pink as it was in Star Trek VI and I believe some of Discovery. Otherwise Klingon blood is generally red.
"I can see Kahless! The first one! The original one!" Presumably in contrast with the clone from TNG: "Rightful Heir".
Mary Chieffo is credited in this episode. She played L'Rell on Star Trek: Discovery. I'm not great at recognizing her voice, but she presumably played K'Ellara or Enaj, though maybe I'm just typecasting her and she played food critic Madame Gonald. Screen Rant says she was K'Ellara. https://screenrant.com/star-trek-lower-decks-mary-chieffo-discovery-klingon-comeback/
In any case, one of the female Klingons was played by Dulcé Sloan of The Daily Show. She teased this in an interview last February. https://people.com/dulce-sloan-on-new-book-exclusive-8557416
EDIT: https://trekmovie.com/2024/11/07/recap-review-star-trek-lower-decks-serves-up-a-delicious-cold-dish-in-a-farewell-to-farms/ also says that Chieffo was K'Ellara. It also says that Sloan was Gonald. Since Sloan said she played a Klingon, I assume she was playing Enaj as well.
Nice notes!
Since you went through the history of Cetacean Ops, it's worth remembering it was referenced more noticeably albeit less overtly in "The Perfect Mate" when La Forge says "Listen, have you had a chance to see the dolphins yet?"
This may just be a coincidence, but the room with the divided gravity reminded me of the "sweet spot" that Mayweather enjoyed, but since there's no point where the gravity seems to cut entirely, this may not be an intended allusion. Though they do mention having a problem with the gravity plating, which was mentioned in many episodes of ENT starting with "Unexpected". (Also a few times on Voyager.)
The tops of the kiosks in the shopping area are shaped like TNG-era comm badges.
Just to add to this, this is the uniform type primarily seen in seasons 1-2 with the extra line across the top.
Nothing to add on this one; just wanted to say good catch noting the collar on that one! I had to look a few times before I realized which one you meant.
Also an excursion jacket from that era (on the left side).
The grav plate manual is on one of a set of cylindrical record tapes. I feel like these probably appeared in TOS at some point, though I'm not positive. In any case, they definitely exist in real life; cylindrical magnetic tapes were used for decades, and probably still are in some cases. https://www.alamy.com/stock-photo/1980s-computer-tapes.html
A sign (about 17 minutes in) mentions "astro-medicine ward 4". A sign with the same text is visible outside of sickbay in TOS, as well as in early promotional photos of Paul Fix as Dr. Piper and Sally Kellerman as Dr. Elizabeth Dehner. You can also see a re-creation at the Star Trek Set Tour in Ticonderoga, NY.
https://tos.trekcore.com/gallery/albums/photography/cast-photos/guest-stars/paulfix_drpiper02.jpg https://tos.trekcore.com/gallery/albums/photography/cast-photos/guest-stars/kellerman_tospb.jpg
There's a sign that says "Trav..." and is cut off (also 17 minutes in). It's probably regarding "Travelers" or something and not an allusion to Travis Mayweather. Probably.
When Chad whips out the corn dogs at the end, the gesture and sound effect (snikt) resemble Wolverine from the X-Men expanding his claws.