The analysis of nearly 500 varieties of tinned and chilled soups sold in supermarkets found that 23% contained too much salt. Of the 481 soups Action on Salt and Sugar (AoSS) tested, nearly half (48%) of branded soups and 6% of supermarket own-brand soups still exceeded the government's voluntary salt target of 0.59g per 100g serving. The saltiest was Soup Head's Tom Yum soup, with 3.03g in a 300g pack more than half an adult's recommended total daily limit and saltier than eating two McDonald's cheeseburgers.
"There's no harm in using it," Sarda says. "It's the same principle behind why a pinch of salt is essential in baking - it does not make the cake taste salty; rather it makes it taste richer with chocolate or vanilla." Just as in baking, adding a pinch of salt to other foods, such as watermelon, often enhances the sweetness of that food. Science has proven that the receptor cells on our taste buds react favorably to the marriage of salt and sweet.