You have a few slices of paper-thin prosciutto crudo left from a charcuterie board, and a package of the thicker, pinker prosciutto from the deli counter from earlier in the week. Same name on both labels. Very different products. Very different shelf lives.
Does prosciutto go bad?
The short answer: Yes, prosciutto goes bad, but when depends entirely on which type you have. A whole, uncut prosciutto crudo leg can last 6 to 12 months hung in a cool dry place. Pre-packaged sliced prosciutto lasts up to 4 to 6 months vacuum-sealed and unopened, then 3 to 5 days after opening. Deli-counter sliced prosciutto crudo should be used within 2 to 3 days. Prosciutto cotto, the cooked variety, follows the same rules as any cooked deli meat: use within 3 to 5 days of opening.
For more on storing deli meats, see the Food Storage Guide.
Key Takeaways
Whole prosciutto crudo leg, uncut: 6 to 12 months in a cool dry place
Whole leg, after first cut: wrap cut face, refrigerate, use within 2 to 3 months
Pre-packaged sliced, unopened: 4 to 6 months vacuum-sealed
Pre-packaged sliced, opened: 3 to 5 days refrigerated
Deli-counter sliced crudo: 2 to 3 days refrigerated
Prosciutto cotto (cooked): 3 to 5 days after opening
Spoilage signs: slimy texture, sour or rancid smell, gray or green discoloration
Prosciutto Crudo vs. Prosciutto Cotto: Two Different Products
Most storage confusion about prosciutto comes from not knowing which of these two products you have. They look similar at a glance but are produced differently, taste completely different, and follow different storage rules.
Prosciutto crudo is raw, salt-cured, and air-dried over 12 to 36 months. No cooking is involved. The result is the paper-thin, translucent, ruby-red or deep pink meat with white fat ribbons that you find draped over a charcuterie board or a slice of melon. The curing and drying process removes enough moisture to make the whole, uncut leg shelf-stable without refrigeration in the right conditions. Parma, San Daniele, and Carpegna are the most recognized designations. This is the dry style that ages into something complex, salty, and sweet.
Prosciutto cotto is cooked rather than dried. The leg is deboned, brined or steamed at low temperature for an extended period, sometimes up to four days, then sliced. The result is a pale pink, milder, moister ham closer in style to a high-quality deli ham. It may be sold thinly sliced but is not paper-thin like crudo. It contains more moisture and behaves like any cooked deli meat for storage purposes. At the grocery store, if the slices are translucent, ruby-red or deep pink, and paper-thin with visible fat ribbons, it is crudo. If they are pale pink, opaque, and uniformly textured without distinct fat streaks, it is cotto.
How Long Does Prosciutto Last?
Type
Pantry or Cool Room
Refrigerator
Freezer
Whole crudo leg, uncut (bone-in)
6 to 12 months at 55 to 65°F
Up to 12 months
Not recommended
Whole crudo leg, after first cut
Not recommended
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