My mum's recipe [chilli and garlic pickle] simple and easy recipe

Green chilli: 3 cups(sliced)
Garlic: 2 cups(sliced)
Salt: 1 and a half tea spoon
Turmeric : 1 tea spoon
Nigella seeds(kalonji): 1 tea spoon
Lemon juice or vinegar : 2 table spoons
Mustard oil: 2 table spoons