Lamb with Redcurrant Sauce

Name: Lamb with Redcurrant Sauce
Cuisine: American
Ingredients: Leg of Lamb (Bone-In, 3-4 pounds); 4 garlic cloves, sliced in half; 3 tbsp neutral oil (grapeseed, canola, or avocado); 1 tbsp chopped fresh oregano; 1 tbsp chopped fresh rosemary; 1 tbsp chopped fresh parsley; 20 shallots, peeled, keep whole; ½ cup red wine; ½ cup chicken stock; 1 cup red currants (plus more, for garnish); 4 tbsp redcurrant jam; 2 tbsp brown sugar; 1 tsp chopped fresh rosemary; 1 tbsp apple cider vinegar; salt and freshly ground black pepper; rosemary to garnish