Braised Potatoes and Kielbasa

When people talk about german/polish cuisine there tend to be a lot of jokes about lederhosen and yodeling (I've never actually heard a German yodel...I've heard a lot of bad American impressions of German yodeling.) However, their food is good solid easy to make stuff and when you are sick and everyone in the house is sick, easy and solid is what I go for.

2 Tbs Oil
1 onion, chopped
4-5 yukon potatoes diced
1/2 - 1 whole head of cabbage, chopped
1 package kielbasa, sliced
2 Tbs Dijon/Brown mustard
1 bottle lager style beer

Saute the onion in the hot oil, add the rest of the ingredients. Simmer gently for 40 minutes. Salt to taste.