barberry

The fruit of the berberis shrub, barberries have been known by many names. In England, they were once commonly known as pipperages, and used for jams and jellies due to their high levels of pectin.
In Persian, they are known as zereshk.
Most traditionally, barberries are used in an Iranian rice pilaf known as tahcheen-zereshk, where the bright red jewel-like berries contrast perfectly against the saffron-infused rice, both in flavour and colour.