Salad Cream Is Not Just Mayonnaise
Despite looking identical to mayonnaise, salad cream is a completely different condiment. It relies on vinegar and water for its base, whereas mayonnaise is primarily built from oil.
This zesty British staple became the first mass-produced dressing when it launched in 1914. Because it uses less oil and more acidity, it provides a much sharper, tangier flavor profile than its creamy cousin. It has since become an iconic topping for sandwiches and salads across the United Kingdom. Many people assume they are the same product, but the science of their emulsion makes them distinct kitchen tools.
Source: Salad cream