Prawns Tandoori / Tandoori Shrimp

Ingredients:-

Tiger / Jumbo Shrimp - 1 lb
Thick Yogurt-1/2 cup
Ginger-Garlic paste-2tbsp
Chilli powder-1 tsp
Garam masala powder-1/2 tsp
Turmeric powder-1/2 tsp
Lime juice-1 tbsp
Tandoori Masala-1 tbsp(optional)
Red food color-1/2 tsp (optional)
Mustard oil-1tsp
Salt to taste
Wooden Skewers (soaked in water for 30 mins)

For Garnishing:-
Chaat masala powder as per taste
Lime juice