The Ruby Feast!

If you're like me and are stuck with no quest and the same food day after day, you are somewhere in the questline. Here are the quests to check...

All Tea, No Shadeleaf
See if you've already completed this by typing: /run print(C_QuestLog.IsQuestFlaggedCompleted(70930))
Warm Away These Shivers (follow-up quest)
See if you've already completed this by typing: /run print(C_QuestLog.IsQuestFlaggedCompleted(67047))

The Life of Spice
See if you've already completed this by typing: /run print(C_QuestLog.IsQuestFlaggedCompleted(70932))
10,000 Years of Roasting (follow-up quest)
See if you've already completed this by typing: /run print(C_QuestLog.IsQuestFlaggedCompleted(67063))

The Sea Out West
See if you've already completed this by typing: /run print(C_QuestLog.IsQuestFlaggedCompleted(70957))
Rambling Delight (follow-up quest)
See if you've already completed this by typing: /run print(C_QuestLog.IsQuestFlaggedCompleted(67064))

Finest Fungi at the Feast
See if you've already completed this by typing: /run print(C_QuestLog.IsQuestFlaggedCompleted(70958))
Future-Fresh Fungi (follow-up quest)
See if you've already completed this by typing: /run print(C_QuestLog.IsQuestFlaggedCompleted(67065))

Savory Seas
See if you've already completed this by typing: /run print(C_QuestLog.IsQuestFlaggedCompleted(70981))
Delights to Delve For (follow-up quest)
See if you've already completed this by typing: /run print(C_QuestLog.IsQuestFlaggedCompleted(67066))

Hearts of Starch
See if you've already completed this by typing: /run print(C_QuestLog.IsQuestFlaggedCompleted(70987))
Navigating the Leapmaize (follow-up quest)
See if you've already completed this by typing: /run print(C_QuestLog.IsQuestFlaggedCompleted(67067))

The Egg's the Thing
See if you've already completed this by typing: /run print(C_QuestLog.IsQuestFlaggedCompleted(70988))
Anything But a Breeze (follow-up quest)
See if you've already completed this by typing: /run print(C_QuestLog.IsQuestFlaggedCompleted(67068))

Hope this helped!

The script says I have completed the quest but every day I am only offered the same items and never progress on the achievement.

If you can't pick up the quest from the banner, then you may need to finish the Obsidian Citadel intro, or more specifically the quest Black Wagon Flight. Activating the intro skip on an alt by talking to [npc=198751] will also flag the quest as completed.

After that, you should be able to get this quest from the banner inside The Roasted Ram in Valdrakken