Question

Why pickles and sour substances are not stored in a brass or copper vessel?

Answer 1

Answer:

pickles and sour substances react with brass or copper thats why these substances are not kept in copper vessels

Answer 2

pickles often contain vinegar which is the mixture of acetic acid (5-8%) in water. We also know that all acids have a property of sourness.

Metals like copper etc can react with these acids to produce it's salt and hydrogen which means storing pickles in such vessels can contaminate them