Smoked Sausage Sandwiches
["1 1/4 lb. kielbasa or smoked bratwurst", "water", "2 medium onions, thinly sliced", "4 Tbsp. butter", "1 1/2 c. shredded Cheddar cheese", "1 tsp. mustard", "dash of cayenne pepper", "1 egg yolk", "1/4 c. beer", "4 French rolls, split and toasted", "dill pickle"]
["Pierce sausages in several places with a fork; place in a medium frying pan.", "Pour water to cover; bring to boiling.", "Cover, reduce heat.", "Simmer very slowly for 10 minutes; drain."]
["kielbasa", "water", "onions", "butter", "Cheddar cheese", "mustard", "cayenne pepper", "egg yolk", "beer", "French rolls", "dill pickle"]