As the name suggests, the restaurant serves set meals (teishoku) and a special curry of the day. It’s pretty unheard of.
On this particular day, the set meal is Chicken nanban. But a lot people eat teishoku thinking, as you would expect, this to be a curry place.
Beef masala is delicious. Meat comes with layer upon layer of perfectly subtle flavour The balance with garnish is also exquisite.
Osaka curry is getting more and more extreme.

Teishoku-do Kongoseki
Osaka Prefecture 1-8-25 Tateyamachi Chuo-ku, Osaka-shi Heights Matsuya-cho 1st floor
06-7174-2578