Add the saffron to the warm water.
Pour into the semolina and mix to form a dough.
Knead for 5 minutes until smooth and springy. Wrap and rest for 1 hour.
Heat the oil in a pan over medium heat. Add the onion, garlic, fennel seeds and bay leaf. Cook until softened but not coloured.
Add the sausage meat and cook until browned.
Pour in the white wine and reduce by three quarters.
Add the tomatoes, season with sea salt and cracked black pepper, then simmer for 20 minutes until thickened. Keep warm.
Roll the dough into thin cylinders approximately 1 cm thick, then cut into small pieces.
Roll each piece down a gnocchi board or fork using your thumb to create ridges.
Leave the malloreddus on a tray lightly dusted with semolina.
Bring a pan of salted water to the boil and cook the malloreddus until they float to the surface.
Drain and stir through the ragù.
Finish with grated Pecorino Romano and serve immediately.