In a pot bring stock to a boil, then in a large saute pan heat oil to medium add onions and saute for 2-3 minutes (no colour)
Add sliced chorizo cook out oils and then add garlic,peppers and seasonings after 2 minutes add rice and over a gentle heat coating grains until they slightly become translucent on the edges.
Now comes the work stirring constantly add 2 ladles of hot stock. It will bubble and absorb quickly, this is normal.
Gradually add stock a ladle at a time as each previous ladle is absorbed totally, keep stirring. You will see a change in the texture of the rice as the starch releases
In the last few minutes as u are nearly out of stock flake in the mackerel and sweet corn (optional), finish cooking check seasonings u may or may not need salt as the mackerel us salty.
Stir in parsley and serve immediately. Enjoy
