Deseed the chilli, then finely chop.
Heat 1 teaspoon of oil and fry the chilli for 1 minute.
Add the frozen spinach, simmer under cover for 5 minutes until tender.
Add the spices and season to taste with salt and pepper.
Cook uncovered until all the cooking juices have evaporated, then turn off the heat and let it cool.
Rinse and drain the beans. Mash it lightly with a fork. Mix with the spinach and lemon zest, then form about 10 patties between your palms.
If you have time, cool them in the fridge.
Beat an egg in a bowl. Put the breadcrumbs in another bowl.
Coat the patties in the egg then the breadcrumbs and fry them in the remaining oil.
Drain the patties on kitchen paper and serve.