1. bring water to a boil in a large saucepan and cook the soaked chickpeas until tender, then drain.
   
2.  In a large bowl, mash the chickpeas. In the same saucepan, bring salted water to a boil, add the potatoes and cook until soft.
   
3.  Remove from the heat, drain, let cool just enough to handle and peel.
   
4.  Mash and add to the mashed chickpeas. 
   
5.  In the same saucepan, add 1 tbsp of the oil and place over medium heat.
   
6.  Sauté the green peas and mash coarsely before combining with the mashed chickpeas and potatoes. 
   
7.  In a large skillet, heat the remaining 2 tbsp of oil and slightly fry the onion.
   
8.  Add the garlic, green chilies and ginger and continue to fry.
   
9.  Add spinach and sauté until all liquid has evaporated. 
   
10.  Remove from the heat and let cool.
    
11.  Finely chop the cooked spinach, onion, garlic and add to the chickpea mixture. 
    
12.  Fold the egg into the vegetable chickpea mixture.
    
13.  In a mortar or small food processor, add the toasted spices and grind to a powder.
    
14.  Pass through a fine sieve and regrind the larger parts.
    
15.  Remove any remaining unground pieces of cardamom pod. 
    
16.  Add the ground toasted spices and the rest of the ingredients to the chickpea mixture.
    
17.  Stir until completely combined. 
    
18.  Wet your hands and place the chickpea mixture on the skewers.
    
19.  Leave enough room on one end of the skewer to easily handle it.
    
20.  The kebab should be not more than 1/2-inch in diameter.

= SAUCE =

1. Heat olive oil and unsalted butter in a 2-qt. saucepan over medium-high heat.
   
2.  Add garlic, chile, and onion; cook, stirring occasionally, until golden, about 5 minutes.
   
3.  Stir in chile powder, sugar, paprika, tomatoes, plus salt and freshly ground black pepper; bring to a boil.
   
4.  Reduce heat to medium-low; cook, stirring occasionally, until sauce is slightly reduced, 6–8 minutes.
   
5.  Let cool slightly, then transfer to a blender.
   
6.  Add lemon juice; purée until smooth.