Jumbo Vulcan mollusks are a gourmet delicacy from Vulcan, best when sauteed in Rhombolian butter. Quark served jumbo Vulcan mollusks to Fallit Kot when attempting to appease him in 2370. (DS9: "Melora")
This food is likely related to the jumbo Romulan mollusk.
Due to the fact that Vulcans are strictly vegetarian, the recipe was likely created by another species.