Regulation 140

Salad dressing shall be a mixture of either vegetable or milk fat with vinegar or citrus fruit juice or both with or without other foodstuffs, permitted chemical preservatives, colouring matters, flavouring agents, emulsifiers and sequestrants.

Salad dressing described as mayonnaise shall be a product that contains not less than 30% (w/w) of vegetable oil, and in which the sole emulsifier is egg yolk or whole egg.