Take a pan , add oil and temper mustard seeds , urad dal and curry leaves.
Add chopped beans to it and stir well.
In a mixie jar, grind coconut, jeera, shallots and birds eye chilli. (5 second pulse grind will do)
Pour the grinded mixture to the beans, add salt and turmeric powder , mix well.
Cook without covering the lid, thats the ideal method of making thoran in kerala style.
when water evaporates completely, flame off.
best to have with rice and curd.