Ainsley Harriott
            
                            Ainsley Harriott: Now it's all about our calypso food
                    
    
            
             
        
        
        
                    
					
				
					 
        Ainsley Harriott: Now it's all about our calypso food
Sweet potatoes and mangoes aren't the mysterious crops they were when they first hit British shops. TV chef Ainsley Harriott says immigration has made everyone's plates tastier