Yes, coconut chutney can be preserved for a short period by topping it with a layer of oil, which helps to prevent spoilage by creating a barrier against air and moisture.
Topping coconut chutney with oil is a traditional preservation method. The oil acts as a protective layer, preventing air and moisture from reaching the chutney. This reduces the growth of bacteria and mold, which are the primary causes of spoilage. The type of oil used can vary, but commonly used oils include vegetable oil, coconut oil, or mustard oil. The oil should completely cover the surface of the chutney. This method is best suited for short-term preservation, typically extending the shelf life by a few days when refrigerated. For longer preservation, other methods like freezing or pickling are more effective.
Always use a clean, dry spoon when taking chutney from the jar to avoid introducing contaminants that can accelerate spoilage, even with the oil topping.