“but owes its meaty texture and seafood taste to the ingredient that gives the treat its name – sand worms”
You do not eat Shai-Hulud. Shai-Hulud eats you!
There’s an Italian cheese, illegal even in Italy, that’s “processed” by parasitic worms.
There’s a window of when to eat it. Too soon, and the worms can take up residence in your stomach. Too late, and it’s toxic.