The don't change your recipe is certainly true. I remember Arnott's (Australia) has a disastrous backlash[1] when they tried to change the flavour of BBQ and Pi

The don't change your recipe is certainly true. I remember Arnott's (Australia) has a disastrous backlash[1] when they tried to change the flavour of BBQ and Pizza Shapes. [1]: https://www.smh.com.au/business/consumer-affairs/arnotts-shapes-new-and-improved-flavours-leave-customers-furious-20160414-go66ik.html https://www.smh.com.au/business/consumer-affairs/arnotts-sha...