Bangers and Mash

INGREDIENTS

• 6-8 pork sausage links
• 2 Tb. butter, separated
• 1 large onions, sliced thin
• 1 bottled beer
• 1 Tb. flour
• 2 Tb. Worcestershire
• ½- 1cup chicken or beef stock
• Salt and Pepper
• 2 lbs. red skinned potatoes
• 2 Tb. butter
• 3-4 Tb. milk
• 1 Tb. whole-grain mustard
• ¾ cup shredded Dubliner cheese