Grate or grind the mango and set it aside with soaked and cooked peas and grated coconut.
In a pan ad 3 tbs oil and let it medium heat. now add the tempering ingredients listed one by one. Start with mustard seeds then add the urad dal and then hing and curry leaves.
When it starts to splutter add in the slit green chillies, grated ginger and red chilli
Once its cooked for a 3 sec add in the grated or ground green mango to the mix. Let it all cook for about 5 minutes. you will see the mango change color.
Then add in the dry powders, Turmeric, red chilli powder, salt and Amchoor(dry mango) powder to the pan.
Let tis all cook together for another 5 mins
Once the oil starts to leave the sides add in the cooked peas and grated coconut and mix well. Give the mixture another 5-8 minutes to mix in.
Now the thokku or the mango rice mix is ready.