Boil water in a pot, add a certain amount of oil and salt, and cook the spaghetti for about 7 minutes. Drain and rinse with cold water. Set aside.
Heat a pan and add olive oil. Add tomato puree and chopped basil leaf, and stir-fry. Add dried oregano, 4 tsp OKK mushroom seasoning, and continue stir-frying.
Add the cooked spaghetti, coarse black pepper, sugar, prawns, and flower squid to the pan. Stir-fry until fragrant and well combined.