Real in-store prices from 600+ Costco locations. Download on the App Store to track prices, scan shelf tags, and get alerts.
Southern Sun Sour Mix Bag-in-Box Syrup, 2.5 Gallon
In-store pricing snapshot
Last known warehouse price · Jul 31, 2025. Currently out of stock.
* Prices shown are for Costco members only.
Southern Sun Sour Mix is a professional-grade sour cocktail mix concentrate packaged in a 2.5-gallon Bag-in-Box (BIB) format, designed for high-volume commercial beverage service. The concentrate connects directly to standard fountain dispenser syrup lines and is mixed with carbonated or still water to produce a finished drink. Its bright yellow color and tangy citrus flavor — derived from concentrated lemon juice and citric acid — make it ideal for margaritas, daiquiris, lemonades, and other sour cocktails or mocktails.
Each 2.5-gallon bag-in-box yields 960 finished fluid ounces of beverage, with one gallon of syrup producing approximately 384 fluid ounces. The syrup has a Brix of 55.4 and a pH of 2.2, delivering a well-balanced sweet-sour profile. Gross package weight is approximately 26.60 lbs, and case dimensions are 15 3/4 x 11 3/8 x 4 1/2 inches.
Store the bag-in-box in a cool, dry place off the floor, protected from freezing temperatures, excessive heat, and direct sunlight. Unload immediately upon delivery and ship at ambient temperature.
Ingredients: High Fructose Corn Syrup, Sugar, Water, Concentrated Lemon Juice, Citric Acid, Less Than 1% Of Each: Natural Flavors, Vitamin C (Ascorbic Acid), Sodium Benzoate (to Protect Taste), Potassium Sorbate (to Protect Taste), Modified Corn Starch, Glycerol Ester of Rosin, Yellow #5, Yellow #6.