Cook the fish (use the manufacturer's instructions).
Finely chop an onion and garlic clove, then fry for around 3 minutes in 1 tablespoon of rapeseed oil. Do not burn.
Next, add a knob of butter and the rice. Make sure you coat all the rice with the butter. If using you can add the wine now.
Add a ladle of the hot stock and stir. When the risotto absorbs all the liquid, you add another ladle of stock until the risotto is cooked.
Keep stirring the risotto so the rice is evenly cooked and to stop it from burning. The risotto is cooked when the rice is tender but firm to the bite.
Add in the frozen peas, spinach, and herbs while you are still adding the stock.
Once the rice is cooked crumble in the cooked fish and stir through.