Classic Bangers And Mash With Onion Gravy

Place the peeled and quartered potatoes into the large saucepan and cover with cold water. Add a generous pinch of salt. Bring to a boil at 100°C/212°F, then reduce the heat and let simmer for 15 to 20 minutes until tender when pierced with a fork.

While the potatoes are cooking, heat the vegetable oil in the large skillet over medium heat. Add the pork sausages and cook slowly for about 15 minutes, turning frequently, until they are deep golden brown all over and the internal temperature reaches 74°C/165°F.

Remove the cooked sausages from the skillet and set them aside on a warm plate. Leave the flavorful rendered sausage fat in the pan.

Lower the skillet heat to medium-low. Add the butter and thinly sliced onions to the remaining sausage fat. Cook gently for 15 to 20 minutes, stirring occasionally, until the onions are incredibly soft, reduced, and deeply caramelized.

Sprinkle the all-purpose flour over the caramelized onions and stir continuously for 2 minutes to cook out the raw flour taste and form a thick paste.

Gradually whisk the hot beef stock into the onion mixture, pouring in a small splash at a time and stirring vigorously to prevent lumps. Stir in the Worcestershire sauce and fresh thyme. Increase heat slightly and simmer for 5 to 8 minutes until the gravy naturally thickens.

Drain the cooked potatoes thoroughly in a colander, then return them to the warm saucepan off the heat. Let them steam dry for 1 minute. Add the warm whole milk, cubed butter, and kosher salt. Mash vigorously until entirely smooth and creamy.

Divide the creamy mashed potatoes among four plates. Place two sausages atop each mound of mash, then generously ladle the rich onion gravy over the entire dish. Serve immediately.