Roast Pork Tenderloin w/ Apple Sage Jus

Ingredients

• 3 whole pork tenderloins
• 3/4 cup kosher salt
• 1/4 cup brown sugar
• 8 cups water
• 6 garlic cloves
• 15 whole black peppercorns
• 3 bay leaves
• 3 tbsp maple syrup (optional)
• 1 tbsp unsalted butter
• 1 tbsp olive oil
• freshly ground black pepper (to taste)
• 2 medium onions
• 4 cups granny smith apples
• 1 tsp grapeseed oil
• 1 cup white wine
• 1 cup apple cider
• 2 cups chicken stock
• 1/4 cup fresh sage
• 1 1/2 tbsp cornstarch
• 1 1/2 tbsp water
• 1/4 tsp sea salt (or to taste)
• 1/4 tsp freshly ground black pepper
• 1 tbsp unsalted butter (optional)