Sour

The oldest writings mentioning yogurt were by Pliny the Elder, who said that some people knew how to thicken the milk into something which was sour but tasty.

'Cheese' comes from the Latin word 'caseus', which has been found to mean 'to ferment/to sour'.

Blinis are yeasted pancakes that are made from buckwheat flour and served with sour cream, jam, honey or caviar.

Further to the south, people make their wontons with egg wrappers and fill them with a combination of pork and shrimp, while in Cantonese cuisine, wontons are often served as an appetizer, deep fried and smothered in sweet and sour sauce.

A classic starter or a side dish to any Korean meal, these spicy, salty, sweet and sour vegetables known as kimchi start their way sliced, tied in bundles.

The four tastes we have in western cooking: sour, sweet, savory, and salty, become extended in India to include.