My favourite whenever I'm on a date
Nirula's ice cream, connought place
Giani's , greater Kailash
Naturals ice cream, connought place (budget friendly)
Kuremal mohanlal in Chandni chowk is one unique to delhi. You'll love the fruit stuffed kulfi. Naturals and gianis are some other options for icecream in particular.
Let me suggest you some of the best ice cream parlour's:
1. Kuremal Mohan Lal Kulfi, Chawri Bazar
2. Natural Ice Cream, CP
3. Picco Licko, Udyog Vihar
4. Giani, Rohini