If you are a fan of the sitcom 'Friends', you may remember an episode where Monica couldn't work out a recipe for the Best Chocolate Chip Cookies and gave up trying. She said: "I guess I'm not gonna be the mom who makes the world's best chocolate cookies. I do make the best duck confit with broccoli rabe. Kids love that, right?" I don't know about kids, but we (just about adults) really do. We make the best Slow Cooker Duck Confit with cherry sauce and serve it with tenderstem broccoli "rabe".
Prick the skin of the duck legs with a fork or a cocktail stick/ toothpick all over. This will ensure the fat underneath the skin can escape whilst cooking and make the duck skin crispy.
Season the legs with coarse salt (we used sea salt) and pepper. If you're looking to preserve the confit duck legs, cover and leave them cure in salt for 7-8 hours in the fridge. If you're going to eat the confitt duck within a few days, you can cure for an hour, or so.
Place the duck legs in your slow cooker, skin side up. Pour the olive oil over them, add the garlic and rosemary sprigs. Cover and cook on low for 6 hours.
After 6 hours, remove the duck legs from the slow cooker onto a baking tray. Be very gentle, the meat will be sliding off the bone at this point and you want to keep the legs intact.
***If you're looking to preserve the confit duck legs to eat later, place the cooked legs in a single layer in an airtight container, pour all the fat from the slow cooker on them, making sure the legs are fully submerged (you may need some extra oil/fat if there isn't enough). Once the duck and fat have cooked down to room temperature, cover and keep in the fridge for up to 2 months.***
Preheat the oven to 180°C Fan. Place the confit duck legs in the oven for 20 minutes, or until the skin crisps up.