The small orange fruits (known as ground cherries in some parts of the world) are often candied or covered with chocolate, used in jams, salads, sweets or prepared sott' aceto.
Increasingly you may also see their cousins tomatillos, although they aren't as common.
Other names include:
alchechengi, accatengi, archachengi, berettin de giudeo (Lombardy), ciliegine, chichingi, chichingeri, coralli, erba canina (Tuscany), erba chiocca (Piedmont), fiasche de corai (Veneto), palloncimi, peparole de sante Vingenze (Abruzzo)
Image by T.Orange, Creative Commons License