There is no universal period: format, opening, storage and the label determine it.
Whole ham
Store an unopened ham in a clean, dry, cool, ventilated place. Once started, protect the cut surface and consume regularly. There is no universal number of days for every ham. [1]
Boneless joint
Refrigerate once opened and protect the cut with food-safe film. Follow the package temperature and after-opening period; note when you opened it. [1][2]
Opened slices
Refrigerate and protect slices, away from foods with strong smells. The Consortium mentions 2–3 days for freshly cut slices as guidance with correct storage; your product label takes priority. Serve only the portion needed. [1]
Best-before and use-by
Best-before mainly concerns quality; use-by is a safety limit that must not be exceeded. After opening, follow package instructions. Do not judge safety by smell alone. [2]
Common questions
What if there is mould or an unusual smell?
Do not scrape or improvise when safety is uncertain. Consult the producer or discard the product.
How can I reduce waste?
Cut portions for your consumption, note opening dates and save suitable trimmings to cook promptly.
Sources and scope
JAMÓN.IM educational overview. Serving and cooking suggestions are editorial starting points. Follow your product label and tool manufacturer’s instructions.