IOWA CITY — As with many other businesses, Oasis Falafel has seen a dip in business during coronavirus. Yet co-owner Ofer Sivan said its hummus has been popular enough for it to be a dip in business instead of falling off a cliff.“People are like, ‘My kids won’t eat their lunch if it’s not in there,’” Sivan said.Now that hummus will be available in more stores under a slightly different name.Oasis Falafel is rebranding its grocery line to Oasis Street Food.“Once in a while, we’d get messages from people saying, ‘What’s falafel hummus?’ because it said ‘Oasis Falafel Hummus,’” Sivan said.