This underground chef -- known to New York Post readers only as "Ronnie" -- started small by making a few grilled cheese sandwiches for friends. Now he's up to making 40 sandwiches a day. A growing number of New Yorkers are texting their orders to Ronnie, who grills up their sandwiches in a home kitchen and delivers to an agreed-upon street corner. With growth comes the worry that health-department officials will catch on and shut him down, he says.
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