Cirilian Sour Paste was a drink invented by Z'Vk'Thkrkza, also known as "Aunt Z". This beverage was consumable by both humans and Kadas'sa'Niktos. The name of this drink bears a partial resemblance to Cirilian Noodle Salad, which was another recipe created by Aunt Z. By the time 34 ABY rolled around, she was serving this drink at her tavern located on the supertanker fuel depot named Colossus. It had become recognized as one of the establishment's well-known offerings. In that year, Kazuda Xiono, who worked as a mechanic, placed an order for three Cirilian Sour Pastes for himself and his colleagues, Tamara Ryvora and Neeku Vozo, while they were visiting Aunt Z's Tavern. Aunt Z accepted their order and retrieved three of the drinks from behind the bar.
Later on, in the same year of 34 ABY, the mechanics made another visit to the tavern and once again ordered three Cirilian Sour Pastes. Sometime after this event, Strono Tuggs, an Artiodac chef, released The Life Day Cookbook, a cookbook for the holiday. In this cookbook, he mentioned the beverage while elaborating on Aunt Z's Cirilian Noodle Salad recipe.
The initial appearance of Cirilian Sour Paste was in "The High Tower," which was the fifth episode of the first season of Star Wars Resistance. This animated television series premiered on October 28, 2018. Jenn Fujikawa, one of the authors of Star Wars: The Life Day Cookbook, a 2021 cookbook, developed a recipe for Cirilian Noodle Salad for the cookbook and decided to name it after Cirilian Sour Paste.