Onion bhajis are a spicy Indian snack or starter. The word bhaji refers to a fritter that has been deep-fried and although there are many kinds of bhaji (mushroom, French bean and plantain are all popular choices), the onion bhaji has become a staple of Indian cuisine in the UK. Bhajis are made with a mixture of rice flour and gram flour which means as well as having a lovely crunch, they are also usually gluten free.