Chimichanga, the Mexican restaurant format operated by Prezzo, will open its 21st site next week in Amersham, Buckinghamshire, as it continues to ramp up the rollout of the brand. Prezzo, which is led by Jonathan Kaye, is converting a Café Uno site on Amersham’s Broadway to its Mexican brand. The group has already opened sites under the format in Billericay, Bournemouth and Crawley this year. Earlier this year, Kaye, chief executive, told M&C Report: “Chimichanga has always been good for us since our first branch in Braintree, Essex. They are all good performers. We will try to and push the brand a bit more with four or five openings this year.”