Render smoked bacon in a hot pan, allow the fat to be drawn out slowly turning down the heat.
Add the diced onion and season with salt and pepper.
Add some butter and allow to cook to soften for around 5/10 minutes.
Add the peas and pearl onions and cover with the chicken stock.
Bring to a simmer and add the beurre manie and stir in.
Cover with a cartouche and bake in a 180c oven for 20/25 minutes.
