Cut the cauliflower into bite-sized florets, ensuring they're all roughly the same size for even cooking.
Bring a large pot of water to a rolling boil. Simmer the flame, add turmeric and salt to the water.
Carefully add the cauliflower florets to the boiling water. Let them cook for 2-3 minutes. The cauliflower should soften slightly but remain firm.
Using a slotted spoon or strainer, quickly remove the cauliflower from the boiling water and immediately plunge it into the ice bath. This stops the cooking process and helps retain the cauliflower's crisp texture and bright colour.
Once the cauliflower is cooled completely (after a minute or two), drain it well and pat dry with a clean kitchen towel or paper towel.
Now, your cauliflower is blanched and ready to be marinated for the Gobi 65 recipe!
In a large mixing bowl, combine the ginger-garlic paste, Kashmiri red chilli powder, coriander powder, fennel powder, garam masala, cumin powder, black pepper powder, lemon juice, oil, rice flour, besan flour, corn flour and salt. Mix well.
Add water gradually to make a thick, smooth batter.
Add the blanched cauliflower florets to the marinade. Mix well to ensure the florets are coated evenly. Let it marinate for at least 30 minutes (you can marinate it for up to 2 hours in the refrigerator for better flavour).
Heat oil in a deep pan or kadai over medium heat.
Carefully drop the florets into the hot oil, a few at a time, without overcrowding the pan. Do not disturb for a minute.
Fry until the cauliflower is golden brown and crispy. Remove with a slotted spoon and drain on paper towels.
In the same oil, add fresh curry leaves and slit green chillies. Sauté for a minute until they become crisp.
Garnish over the fried Gobi 65 for added flavour.
Transfer the Gobi 65 to a serving plate. Garnish with chopped coriander leaves and serve hot with lemon wedges on the side.