Restaurants can either make the delivery itself or Groupon to Go will provide a delivery driver who is an independent contractor. “We tend to focus on restaurants that are not already doing delivery themselves,” Roarty said. “We help restaurants sell billions of dollars of food, so this is a natural extension for us.”

A delivery cost for customers of about $4 is a flat fee, so it applies for orders of any amount. It’s up to the restaurant whether they want to set a minimum order amount for the service.

Some Groupon to Go restaurants already deliver, including Mama’s on the Hill, which uses GrubGo, a Clayton-based company that provides delivery for hundreds of restaurants in Missouri and Wisconsin.

Others are offering delivery for the first time, such as Basil Spice Thai Cuisine in the Tower Grove South neighborhood. “I get a lot of calls for delivery, but I’m short of staff,” said owner Somying Fox. “This gives us time and creates revenue.”