Lamb Chops With Balsamic Sauce Lhj

• 4 shoulder lamb chops
• 1 rosemary sprig for (fresh garnish)
• 1/4 shallots (minced)
• 180 ml chicken broth
• 80 ml balsamic vinegar
• 16 ml olive oil
• 14 gr butter
• 1 gr rosemary
• 1 gr thyme