Courgette 'meatballs' and curry gravy

This is a variation on a Madhur Jaffrey recipe, via Food.com and my fiddling with it to anglicize it a bit. Serves 4 with something else on the side.

For the 'meatballs'
3medium zucchini
1⁄2teaspoon salt
1fresh green chilli (can use more or less, to your taste)
small onion
1⁄2teaspoon fresh ginger
3tablespoons coriander
1⁄2cup chickpea flour/gram flour
vegetable oil (for frying)
For the gravy
5tablespoons vegetable oil (can use leftover from the frying above)
2medium onions, finely (minced or grated)
1⁄4teaspoon turmeric
1pinch cayenne pepper
1teaspoon ground cumin
2teaspoons ground coriander
2tomatoes, peeled and finely chopped (could use tinned)
1cup heavy cream � optional, depends if you like creamy curry sauces
1⁄2teaspoon garam masala
1⁄2teaspoon ground cumin, roasted
1⁄4teaspoon salt (to taste)
2tablespoons roasted cashew nuts, chopped (optional but nice contrast)
'Meatballs'.
Wash, trim and grate the zucchini - use the regular grate size on your grater, grating too fine may make it too soggy. Put into a bowl and sprinkle with the 1/2 tsp salt. Set aside for about 1/2 an hour.
Once the zucchini has sat for about 1/2 an hour, squeeze out as much liquid as you can, using your hands or pressing through a fine mesh colander. Reserve the liquid you press out, it will be used in the gravy.
Dry out the bowl and put the zucchini back in.  Whizz the onion, chili,, ginger and 2 tbsp of the coriander in a food processor so they are nice and fine (reserve the rest of the corniander for garnish) and mix in with the zucchini.  Sift the chickpea flour over the zucchini mixture. Mix well and form into about 40 balls, about a teaspoon so they are fork sized to eat. If they're too large, they won't cook well in the middle unless you fully immerse them in oil.
Option 1 � Frying. I prefer to use as little oil as possible for frying, so I flatten them out a bit to make frying easier. In a skillet or wok heat about 1 1/2 inches of oil over medium heat. When the oil is hot, put in about 5 or 6 of the balls - or as many will fit in one layer with room around each of them. Fry for about 2 minutes, turning them until you get a nice even brown coat. I suggest you test one to get a feel for how long it will take to fully cook inside since it really depends on how large you make them, and how much oil is in your pan and how aggressive the heat.  Remove with a slotted spoon and leave to drain on paper towel. Continue with the rest of the 'meatballs', then set aside.
Option 2 � Oven. If you are cooking in advance and have the oven on for something else, I find this works well.  Oil a baking tray generously and heat through in the top of the oven. When the oil is hot, put in the balls in one layer with room around each of them. Pop them in the top of the oven for about 5 mins (depending how hot the oven is, which will depend what else you are doing), and then when browned on the bottom, turn over and do the other side. When nicely browned all over, remove from tray and leave to drain on paper towel.
'Gravy'.
Use about 5 tbsp of the oil from the frying and put into a skillet or saute pan. Heat the oil over medium heat and add onion once the oil is hot. Fry the onion for about 7 or 8 minutes, or until the onion begins to brown and become translucent. Take care not to burn the onion. Once cooked, take the pan off the heat for a moment and add the turmeric, cayenne, ground cumin and coriander. Stir and then return to the heat.
Add the tomatoes and let that cook for about 5 minutes to combine flavours.
Add 1 cup of the zucchini 'juice' -- if you are short, top up with water to reach 1 cup.
Bring to a boil the lower the heat and let the sauce simmer gently for about 15 minutes. Up to this point, you could prepare the recipe in advance.
To finish, (reheat if you have made in advance), add the cream if using, garam masala, roasted cumin and salt. (To roast the cumin, just put it in a dry really hot pan for a few minutes taking care not to burn). Mix sauce well and bring to a simmer.  Add the 'meatballs' and gently spoon the sauce over them, trying not to break any of them. The meatballs turn soft in the sauce, so only cook enough to warm them through.  O you can preheat the meatballs in the microwave and add the hot sauce to them. 
Serve immediately with basmati rice and/or roti or naan bread. Garnish with the reserved fresh coriander and cashews if using.

Mmmm, that sounds lush 

Cor it certainly does!!