Potato Casserole with Grapes, Pear & Onion - Camposol

Ingredients

• 2 lbs. (907 grams) medium to large sweet potatoes (scrubbed) and cut into 8 wedges each
• 2 large yellow onions, cut into 10 wedges each
• 1 large, firm pear, cored and cut into 8 wedges
• 454 grams (1 lb.) green or red seedless grapes
• Small handful fresh rosemary
• 3 tablespoons olive oil
• 1 tablespoon white wine
• 1 tablespoon freshly squeezed lemon or lime juice
• 1 1⁄2 tablespoons maple syrup
• Coarsest ground black peppercorns
• Flaky sea salt or Peruvian pink salt (ground)