Why are pickles and curd not stored in brass and copper utensils?

Pickles and curd are acidic in nature, which can react with metals such as brass and copper. When acidic foods come into contact with these metals, they can leach out harmful substances like copper and zinc into the food. This can lead to food contamination and spoilage, as well as potential health risks if consumed regularly over time.

Additionally, the acidity in pickles and curd can cause a chemical reaction with brass and copper, resulting in a metallic taste and discoloration of the food. Therefore, it's generally not recommended to store acidic foods like pickles and curd in brass or copper utensils.

Instead, it's safer to use non-reactive materials such as glass, ceramic, or stainless steel containers for storing pickles and curd. These materials won't react with the acidic content of the food and will help maintain their flavor and quality without any risk of contamination.