chicken tagine

1 t olive oil
1 lg onion(s),finely chopped
3 garlic clove(s) (1,minced
-tbs)
2 t ginger,minced
1 1/2 t turmeric
1 1/2 t cumin seeds,ground
1 1/2 t coriander seeds,ground
1 cinnamon stick
6 c (to 8 cups) chicken stock
2 t lemon juice
1/2 lb turnips,peeled cut into 3/4
- dice
1/2 lb carrots,peeled cut into 3/4
- dice
1/2 lb parsnips,peeled cut into
-3/4 dice
1/2 lb celeriac,peeled cut into
-3/4 dice,sprinkled with
1 t lemon juice
1 t pickled lemons (opt),chopped
1/2 c raisins
1 sal