To prevent chutney from turning bitter during storage, ensure it's properly sealed in an airtight container, stored in a cool, dark place, and contains sufficient acid (like vinegar or lemon juice) to act as a preservative.
Bitterness in chutney during storage can arise from several factors, primarily oxidation and enzymatic reactions. Here's a breakdown of how to prevent it:
Airtight Sealing: Oxygen exposure is a major culprit. Use sterilized glass jars with tight-fitting lids. Ensure the lid is properly sealed after filling the jar. A vacuum-sealed jar is even better.
Cool, Dark Storage: Light and heat accelerate degradation. Store your chutney in the refrigerator or a cool, dark pantry. Refrigeration significantly slows down enzymatic activity and oxidation.
Sufficient Acidity: Acid acts as a natural preservative. Ensure your chutney recipe includes enough vinegar, lemon juice, or other acidic ingredients. The acid inhibits the growth of spoilage microorganisms and slows down enzymatic browning, which can contribute to bitterness.
Proper Cooking: Thoroughly cooking the ingredients helps to deactivate enzymes that can cause bitterness over time. Make sure all fruits and vegetables are cooked until softened.
Use Fresh Ingredients: Starting with fresh, high-quality ingredients is crucial. Avoid using overripe or bruised fruits and vegetables, as they are more prone to spoilage and bitterness.
To further extend the shelf life and prevent bitterness, consider processing your chutney using a water bath canning method. This creates a vacuum seal and eliminates most microorganisms, allowing for longer storage at room temperature.