From the 2019 seed swap something we are yet to know exactly what it is but probably something like Gardener’s Delight.
This is a slightly unusual activity. The allotment website that we visit had a “largest truss” competition and this was the winner (in fact it had such a large truss that nobody else bothered) with 60+ fruit. The person who grew it (Urban) said it was “just a Gardener’s Delight. The question was asked whether it was a singular freak or a genetic modification which could be inherited. Urban agreed to distribute the seed through the seed swap and we are growing it out to see that it does.