Zesty Moroccan Fish Tagine with Chermoula and Vegetables

Marinated fish, potatoes, tomatoes and peppers are layered in a classic Moroccan tagine seasoned with ginger, saffron and preserved lemon.

To make Chermoula marinade:

https://www.thespruceeats.com/chermoula-recipe-moroccan-marinade-2394640

Ingredients (mix together)
1 large bunch cilantro (coriander, finely chopped, only small leaves and small stems)
4 cloves garlic (pressed or finely chopped)
2 tablespoons paprika
1 tablespoon cumin
1 teaspoon salt (or more, to taste)
Optional: 1 teaspoon chopped fresh ginger
Optional: 1/2 teaspoon cayenne pepper
1/4 teaspoon saffron threads (crumbled)
3 tablespoons vegetable oil
1 small lemon (juiced)