Unknown class ingredientLabel in Interface Builder File (xcode 4.2, iOS 5.0)
@interface QuickGroceryDetailViewController : UIViewController
{
    UILabel *ingredientLabel;
}

@property (strong, nonatomic) IBOutlet UILabel *ingredientLabel;

@synthesize ingredientLabel = _detailDescriptionLabel;

- (void)setDetailItem:(id)newDetailItem
{
    if (_detailItem != newDetailItem) {
        _detailItem = newDetailItem;

        // Update the view.
        [self configureView];
    }
}

- (void)configureView
{
    // Update the user interface for the detail item.

    if (self.detailItem) {
        self.ingredientLabel.text = [self.detailItem description];
    }

}