In almost every street corner and across several eateries, there is a person cracking a hole on the surface of a small puri to stuff it with mashed potatoes and chickpeas, boondhi or peas and dunking it in a pot of chilled, spiced and tangy pani. While we are busy popping these pani puris into our mouth to keep up with the speed at which they are made, we ignore the hygiene involved in making and serving this snack.
Back in 2017, when Aakash Gajjar and Devendra Avhad, managing directors of the Ahmedabad-based Penguin Innovative Engineering went out on their break to enjoy a plate of pani puri, they fell ill and decided this was a challenge for two engineers to solve.
