Heinz Sandwich Spread is a blend of salad cream and relish popular in the Netherlands and Britain. It is classified by the manufacturer as a sauce or relish. The relish ingredients are carrots, celery, gherkins, red peppers and mustard in a finely diced spreadable form. In this respect it is similar to spreadable piccalilli, but milder in flavor. The salad cream base results in a more tart flavor than similar mayonnaise-based sandwich spreads found in the United States.