PEDA — Deoghar's signature sweet and the thing to eat here. It is a soft, fudge-like sweet made from khoya (reduced milk) and sugar, often scented with cardamom. It is both a local speciality and a traditional temple offering, and the shops around the temple precincts and Tower Chowk compete on freshness. Most visitors take a box home.
LITTI CHOKHA — the region's defining savoury dish. Wheat-flour balls stuffed with spiced sattu (roasted gram flour), baked over coals, then dipped in ghee and served with chokha, a mash of roasted vegetables. This is everyday food here rather than a tourist dish, and it is very good.
THEKUA — a crisp, deep-fried wheat-and-jaggery sweet, closely associated with festival cooking in the region and widely available around the temple.
Beyond these, expect straightforward vegetarian food throughout the temple area — thalis, puri-sabzi, and the usual North Indian staples. Because Deoghar is a pilgrimage town, vegetarian food is the default and is easy to find; those looking for non-vegetarian options will find them further from the temple precinct rather than beside it.