Marinate Legs in fresh herbs, salt, pepper, overnight. Rub garlic onto the meatiest part of the legs.
Gently heat the fat that you will pour over the duck.
Rinse off under cold water. If using crock pot, make sure the duck is fully submerged in the fat. If using baking dish for oven, don't overlap and make sure you fully submerge in fat.
Crockpot: Low for 7 hours. Remove and crisp in oven or stove top in frying pan.
Oven Bake: 275 degrees F. for 2 to 2 1/2 hours, prior to taking out of the fat and crisping.
Crisping Duck: You can tranfer skin side down to frying pan to crips skin. I found my duck was falling apart, so I transferred to hot oven, 475 F. for about 30 minutes. (Cook lentils at this time).
Save the fat. You will now have some duck fat. Drain and freeze.
Freeze: You can freeze the duck confit in the fat prior to crispng skin for up to three months. Defrost and then follow instructions for crisping.
Serve over cooked lentils.