Wash the calamari, remove the tentacles, then pat dry with paper towels and cut them into 5mm rounds. Keep the tentacles! Put all of them in a bowl and add the yogurt. Mix well and marinate for up to 1 hour.
In a bowl, mix the gram flour with the spices and salt &pepper.
Drop the squid into this mixture and coat well. Shake off the excess flour then repeat. Put them on a plate.
Heat some oil in deep pan. When piping hot, add the calamari and deep-fry in batches until golden, then drain them on paper towels.
Scatter the spring onion and chopped fresh herbs on top and serve at room temperature with lime/lemon wedges.