Raspberry

he fruit is harvested when it comes off the torus/receptacle easily and has turned a deep colour (red, black, purple, or golden yellow, depending on the species and cultivar). This is when the fruits are ripest and sweetest. Excess fruit can be made into raspberry jam or frozen.

The black raspberry, Rubus occidentalis, is also occasionally cultivated in the Mazandaran, Iran, providing both fresh and frozen fruit as well as jams, preserves, and other products, all with that species' distinctive, richer flavour.