Masala Mackerel with Cumin Spiced Mushy Peas

Name: Masala Mackerel with Cumin Spiced Mushy Peas
Ingredients: 2 mackerel (or 4 fillets); 0.5 teaspoon ground cumin; 0.24 teasapoon ground cinnamon; Pinch ground cloves; 2 cloves of garlic; 0.25 teaspoon black pepper; 0.25 teaspoon salt; 0.25 teaspoon chilli powder; 0.25 teaspoon turmeric; 0.5 tablespoon sunflower oil; 20 grams unsalted butter; 2 vine tomatoes; 5 grams coriander; 20 grams plain flour; 50 millilitres milk; 1 tablespoon lemon juice; 1 teaspoon cumin seeds; 0.5 teaspoon mustard seeds; 350 grams peas (fresh or frozen); 25 grams unsalted butter; Salt; Black pepper