Japanese Cabbage Rolls

1 head cabbage
1 lb ground pork
6 mushrooms, finely chopped
1 carrot, finely chopped
1/2 medium onion, finely chopped
1/2 tsp salt
1/4 tsp pepper

4 cups chicken broth
1-2 tbsp soy sauce

Boil water in large pot. Cut core out of cabbage. Put whole cabbage into pot of water and boil 5-10 minutes until leaves begin to peel off. Mix pork, carrots, mushrooms, onion, salt and pepper in a large bowl. Wrap pork mixture in cabbage leaves. Place in bottom of large saucepan, and cover with broth and soy sauce. Simmer 40-50 minutes until pork is fully cooked.