Tomatillo Lamb

This is another one of Cat Cora's recipes and despite it being simple it is really lovely

Cube a shoulder or leg of lamb (these are the best value)
Brown, you can flour and brown them if you wish and remove from pot
Saute 2 chopped onions
3 sliced garlic cloves
Deglaze with white wine
Add one tin tomatillos
2 cups of beef stock
1 bay leaf
1 sprig of fresh thyme
Season well
Simmer gently for 2 hours
Serve on rice and garnish with sour cream