Five Course Seafood Buffet

Before entering Tomb of Sargeras, remove enough gear pieces to drastically lower your item level so that you can damage the Razorjaw Waverunner murlocs and Abyss Stalkers down to approximately 3-10% health without killing them outright. One method is to visit the Wailing Halls (the area before Sisters of the Moon) and intentionally trigger a purple arcane trap on the ground, which summons a Guardian Sentry that casts Power Drain, reducing all your damage by 90% — kite this mob back into the boss room before engaging the fight.

During Phase 1, damage a Razorjaw Waverunner murloc to below 10% health (around 3%) and stop all damage — the murloc will then move on its own into the inner circle of Sarukel's Devouring Maw and be devoured, completing the Murloc Fillet ingredient. Do not kill it yourself, as the murloc must be eaten by Sarukel to count.

Damage one of the Abyss Stalkers to below 10% health and stop all damage so it is pulled into Sarukel's Devouring Maw and devoured, completing the Eel Tartare ingredient. As with the murloc, the Abyss Stalker must die inside the Maw — do not kill it outside of it.

Have a player intentionally stand inside Sarukel's Devouring Maw and get hit by Hydra Shot while within it, which generates the Hydra Essence ingredient for the achievement.

Allow a Befouling Ink patch to come into contact with Sarukel's Devouring Maw, and have a player soak that ink patch to generate the Ink Sauce ingredient.

Have a player willingly enter the inner circle of Sarukel's Devouring Maw, sacrificing themselves, to generate the Player Seasoning ingredient.

Once all five ingredients — Murloc Fillet, Eel Tartare, Hydra Essence, Ink Sauce, and Player Seasoning — have been fed to Sarukel, defeat Mistress Sass'zine to complete the achievement.