sentence: cut some yukon gold potatoes add them to water in a pan and cook sentence: melt some butter in another pan and chop some leeks put them in water and keep ready sentence: brown some sausages in a separate pan take them out and keep aside sentence: add some onion pieces to the pan and stir add chopped leeks some salt and freshly ground pepper to it sentence: once the onions are brown add some butter and stir sentence: now add 2 tbsp of flour little oil and stir sentence: add some guinness beer and a can of beef broth and stir sentence: now add the fried sausages to it and cook sentence: put the lid on simmer for about 20 minutes sentence: remove the lid and check if the sausages are done sentence: add finely chopped fresh rosemary and stir put the lid on and cook in low heat for 8-10 minutes sentence: plate some mash potatoes add canned peas over it and top with the banger gravy on top and serve