WASHINGTON—Basic Food Flavors Inc., the Las Vegas company at the center of a recall of more than 100 food products, continued to make and distribute food ingredients for about a month after it learned the bacteria salmonella was present at its processing facility, according to a Food and Drug Administration report.

The FDA last week recommended companies recall products, from chips to soups, that contain a commonly used additive made by Basic Food Flavors that tested positive for salmonella. The additive is mixed into foods...