Black mulberry + European chestnut

Morus nigra, the black mulberry, is a species of flowering plant in the family Moraceae, native to southwestern Asia, where it has been cultivated for so long that its precise natural range is unknown. The edible fruit is dark purple, almost black, when ripe, 2-3 centimetres (0.8-1.2 in) long, a compound cluster of several small drupes; it is richly flavoured, similar to the red mulberry (Morus rubra) but unlike the more insipid fruit of the white mulberry (Morus alba). Black (Morus nigra) mulberries are thought to have originated in the mountainous areas of Mesopotamia and Persia and are now widespread throughout Afghanistan, Iraq, Iran, India, Pakistan, Syria, and Turkey, where the tree and the fruit are known by the Persian-derived names toot (mulberry) of shahtoot (شاه توت) (king's or "superior" mulberry), or, in Arabic, shajarat tukki. Jams and sherbets are often made from the fruit in this region.

Castanea sativa is a species of deciduous tree with an edible seed. It is commonly called sweet chestnut and marron. Originally native to southeastern Europe and Asia Minor, it is now widely dispersed throughout Europe and in some localities in temperate Asia. The tree is hardy, long-lived and well known for its chestnuts, which are used as an ingredient in cooking.