Why Does Mayonnaise Separate And Curdle After Long-Term Storage? Mayonnaise is one of the most popular semi-solid condiments in the global food market, widely used in salads, sandwiches, fried food dipping, baking production, and commercial food processing. As a classic oil-in-water emulsion, high-quality mayonnaise presents a smooth, uniform, creamy texture with stable viscosity, no stratification, no lumps, and delicate taste under normal storage conditions. However, many users and bulk purchasers have encountered a common problem: after long-term storage, bottled or barreled mayonnaise gradually separates, with clear oil floating on the top, water-based liquid precipitating at the bottom, and even curdling, lumping, and granular texture deterioration. This article deeply explains the essential reasons why mayonnaise separates and curdles after long-term storage, analyzes external influencing factors, distinguishes normal physical stratification and spoilage curdling, and summarizes scientific storage methods and emergency repair solutions
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