Pork Sausage, with Spanish Onion

Pork sausages from Sainsbury's, found in the freezer. The sausages were allowed to thaw thoroughly. Then they were pricked, and fried in a large flat lidded pan, along with half a Spanish onion, diced.

Cooked at a high heat initially, and then cooked slowly under the glass lid in a little olive oil (half an hour). Turned every five minutes.

Served with semi-skinned potatoes, boiled in salted water for twenty-five minutes, along with a dusting of black pepper, and some tomato ketchup.