ROASTED LAMB SHOULDER WITH GINGER GRAVY

Ingredients:  Lamb: 1 shoulder of lamb  1⁄2 head of garlic 1,5 cups white wine
 1,5 cups water  Salt & Black pepper  1 bouquet of herbs (laurel, thyme, sage) 1 onion in mirepoix
 1 coffee spoon grated fresh ginger 750 ml chicken stock  Potatoes:  500 g. frying potatoes  Olive oil Prepare the shoulder of lamb by…