This place - Karpagambal Kapali Sweets - in Mylapore Mathala narayanan Street (near Kapaleeswara or Kapali temple) has not changed at all in the last 30 years I have known.
Its always had this "dirty, dingy" look and a crowd of people standing fighting in queue to get hot onion pakodas (often referred to as Thool Pakoda) which is probably the best in the city.
Its a one way and you may have to come in through Kutchery road or walk from the Temple/RASI or from nearby Saravana Bhavan
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Some pics of the place:
Its a one way and you may have to come in through Kutchery road or walk from the Temple/RASI or from nearby Saravana Bhavan
View Larger Map
Some pics of the place: