Question

on keeping curd in a brass vessel for sometime it becomes bitter why

Answer 1

the following reaction occurs because brass reacts with the curd that is the lactic acid and that is why the taste becomes bitter

Answer 2

$\red{\underline{\underline{\mathfrak{Answer :-}}}}$

Curd is form when lactobacillus bacteria reproduce. if the curd is not transferred to cool place then curds turns sour because the bacteria continue to multiply and produce more latic acid