Soak the peas for one hour and pressure cook them till tender.
Heat 1 tbsp oil in pan, add mustard and jeera seeds and after they splutter, add ginger-garlic paste, curry leaves and green chilies. Sauté for 1 minute.
Add the cooked peas, chili powder salt and mix well. Mash some of the peas with the back of the spoon. Add little water if you think the mixture is too dry (but make sure it is not too watery).
Cook for 5 minutes on medium and remove from heat. Add lemon juice and let cool.
After the mixture is cool enough to handle, make the samosas as per package instructions and deep fry them in batches.
Serve hot with green chutney or ketchup.