Chow mein ( and , simplified Chinese: 炒面; traditional Chinese: 炒麵; Pinyin: chǎomiàn) is a dish of Chinese stir-fried noodles with vegetables and sometimes meat or tofu. Over the centuries, variations of chǎomiàn were developed in many regions of China; there are several methods of frying the noodles and a range of toppings can be used. It was introduced in other countries by Chinese immigrants. The dish is popular throughout the Chinese diaspora and appears on the menus of most Chinese restaurants abroad. It is particularly popular in India, Nepal, the UK, and the US.