The kosher scene in Houston is better than I would have expected given the size of the Jewish community, maybe because there is nothing else to do. Check the Houston Kashrut Association web site for updates since things change...
Best place to take a business dinner: Madras Pavillion. I am told that as far as Indian vegetarian food goes it's quite good. You will see that most of the other diners are Indian which is a good sign. There is NOTHING on the menu if you don't like Indian food, but they kindly modified one of their dishes for me when I was there. The lunch buffet is a great deal.
Now that Aroma is gone, Saba's is it. They make wonderful soups and fish as well as the usual salads, pizza, pasta and calzones. Not a place to take a client but the food is good.
Meat: Suzie's Grill
Don't be put off by the location, next to a gas station. Although Suzie is Persian, they make Mexican and Chinese. Not my favorite place but most of the locals seem to like Suzie's the best. You can buy some of their entrees at the South Servery on the Rice University campus, just across the street from the Texas Medical Center.
Meat: My Pita
Israeli style shipudim. My favorite. They make laffa, pita and baguette sandwiches or platters with the usual assortment of Israeli style meat and chicken. An Israeli will be disappointed but everyone else will like it.
Just opened last week. Not as quirky an atmosphere as the San Antonio Green but the same food. It worked as a business dinner and everyone loved it except me. They are very good about vegan and gluten-free but I was unable to get my waiter to understand that I will not eat anything with cilantro. Try the deep fried pickles for a truly weird Texas treat.
Dairy or Meat: Cafe at the J/Laykie's Gourmet.
Inside the JCC. Surprisingly good food and a choice of soups, all of which were wonderful. (I love soup.) The food is made fresh and sold in refrigerator containers which they will heat up for you if you want to eat it there. There are a few tables and chairs and the atmosphere is more Starbucks than gym waiting area. Good place to pick up meals for your hotel room.
Takeout: Randalls Supermarket on West Belfort. Wonderful chicken breast sandwiches, fast food style (but large!) hamburgers, Chinese-style chicken and rice made by a guy who used to work for PF Chang. Gets busy on Thursday evening. Avoid the salads, especially the egg salad. They also have rotisserie and fried chicken and a large parve and dairy bakery section. Try the Dutch apple pie!
Bakery: Three Brothers
Amazing but expensive.
Fro-yo: Menchies Frozen yogurt on Bissonet. Different flavors of frozen yogurt and toppings that you buy by the ounce.