Thanks to Mary - she of the 9s - embracing yen for soft fruit

• Fruit Ray and Bert cultivated across years
• Temperate part of the world
• Dark red soft fruit

Wiktionary Word definitions in Wiktionary
n. 1 A cultivated shrub of the genus (taxlink Rubus fruticosus x idaeus nothospecies noshow=1), a cross between the blackberry (''Rubus fruticosus'') and raspberry (''Rubus idaeus''). 2 Its fruit, a large sweet berry.

Wikipedia Word definitions in Wikipedia
Tayberry ( Rubus fruticosus x R. idaeus ) is a cultivated shrub in the genus Rubus of the family Rosaceae patented in 1979 as a cross between a blackberry and a red raspberry , and named after the river Tay in Scotland. The fruit is sweeter, much larger, ...