I didn't go to a lawyer first. I couldn't afford one.

I went on the radio.

BBC Radio Cornwall had a morning programme where local people called in about local problems. Usually potholes and parking. I rang in on a Thursday.

I didn't shout. I didn't cry. I just told them what had happened. Calmly. With dates. The listing fees. The hundred and twenty days. The wastage charges. The recipe. The twenty-one crimps.

When I'd finished, the presenter was quiet for a moment.

“Ellie,” she said. “Are you saying Greenfields copied your grandmother's pasty?”

“I'm saying they asked for it for a food safety check. And then they made one exactly the same.”

The phone lines lit up for the rest of the show.

By lunchtime, a national newspaper had called. By the evening, it was on the BBC News website. Cornish baker claims supermarket stole grandmother's pasty recipe.

By the weekend, people all over Britain were posting photos of Greenfields pasties next to Pascoe's, counting the crimps.

Twenty-one. Every single time.