I went to Keens Steakhouse for the first time. After my $150 meal, I get why it's been around for over 100 years.

• I visited Keens Steakhouse, a historic New York City haunt that's popular for power lunches.
• The place feels cozy and rich with history, and the food is pretty impressive.
• It's expensive but tasty — and I think the mutton chop is famous for a reason. 

The power lunch, business lunch, midday feast — it's a meal by many names. And as dining trends shift over the years, one thing that's stayed constant is the symbiotic relationship between a corporate card and a steak house.