Dear @jaynei
Mustard has a slightly bitter feeling, so if you blend it with mustard with two to three green chillies and a little salt, you can freeze it and keep it frozen.You can blend right away when you need to.Benefits of keeping frozen You can use it anytime in any cooking as per your requirement.
In our country, usually small fish curry, this mustard paste is used. Besides, you cook with this mixture on vegetables like Lady finger, bitter gourd, cucumber, snack gourd,spiny gourd Pointed gourd, and if you add shrimp, its taste will increase. Moreover, in our country, the hilsa fish curry made with this mustard paste tastes great.You can try it on any cooking normally.