Cottage Pie 1 very large parsley root or 4 medium, or 3 large yukon gold potatoes, peeled and cut in

Cottage Pie

1 very large parsley root or 4 medium, or 3 large yukon gold potatoes, peeled and cut into uniform 1/2″ chunks
8 tablespoons butter, divided
1 ½ pounds ground beef
1 ½ red onions, diced
4 – 5 carrots, peeled and cut into half moons
5 stalks celery, sliced
2 teaspoons sea salt, divided
2 teaspoons Worcestershire sauce
1 teaspoon yellow mustard seed
4 bay leaves
fresh ground black pepper to taste
6 large leaves kale, cut into thin ribbons

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