Bacon vs. Pancetta

: Differences, Uses, and How to Cook with Them

What exactly is Curing?

At its core, curing is a preservation and flavouring technique that removes moisture from meat, primarily through salt, to prevent the growth of harmful microorganisms. This, in turn, concentrates the meat’s flavour and helps it retain its colour. Dry curing rubs a coarse mix of salt and seasonings onto the meat, pulling moisture out through osmosis as the salt migrates inward. Wet curing, or brining, submerges the meat in a salted liquid or injects the brine into the meat, producing a milder flavour. Many cured pork products also rely on sodium nitrite or potassium nitrate, compounds that bind to myoglobin to give cured pork its pinkish-red hue and inhibit the growth of harmful bacteria. Not every product uses nitrates, though; salted pork, for instance, relies on salt alone.

Why is Pork Cured in the First Place?

This goes back to an era before refrigeration, when meat was one of the foods subjected to preservation techniques to prevent it from spoiling. The practice of curing dates back to around 3000 BCE in Mesopotamia, where meat and fish were preserved in salt and sesame oil. By 200 BCE, the Romans had adopted salt-curing from the Greeks and were the first to record salt's curious side effect: it turned meat a deep red, an early clue to what nitrates do to pork. 

Roman soldiers were said to have carried salted pork on long marches, since curing was the best method back then to keep meat edible in the absence of cold storage. By medieval times, which began with the fall of Rome in 476 CE and the beginning of the Renaissance in the 14th century, salt, saltpetre, and smoke were standard tools across Europe.

What exactly is Curing?

At its core, curing is a preservation and flavouring technique that removes moisture from meat, primarily through salt, to prevent the growth of harmful microorganisms. This, in turn, concentrates the meat’s flavour and helps it retain its colour. Dry curing rubs a coarse mix of salt and seasonings onto the meat, pulling moisture out through osmosis as the salt migrates inward. Wet curing, or brining, submerges the meat in a salted liquid or injects the brine into the meat, producing a milder flavour. Many cured pork products also rely on sodium nitrite or potassium nitrate, compounds that bind to myoglobin to give cured pork its pinkish-red hue and inhibit the growth of harmful bacteria. Not every product uses nitrates, though; salted pork, for instance, relies on salt alone.

Why is Pork Cured in the First Place?

This goes back to an era before refrigeration, when meat was one of the foods subjected to preservation techniques to prevent it from spoiling. The practice of curing dates back to around 3000 BCE in Mesopotamia, where meat and fish were preserved in salt and sesame oil. By 200 BCE, the Romans had adopted salt-curing from the Greeks and were the first to record salt's curious side effect: it turned meat a deep red, an early clue to what nitrates do to pork. 

Roman soldiers were said to have carried salted pork on long marches, since curing was the best method back then to keep meat edible in the absence of cold storage. By medieval times, which began with the fall of Rome in 476 CE and the beginning of the Renaissance in the 14th century, salt, saltpetre, and smoke were standard tools across Europe.

How is Guanciale Made?

Guanciale is the pork product most cooks confuse with pancetta, but it comes from a completely different part of the animal: the jowl, or cheek, and the word ‘guancia’ refers to that body part. It's rubbed with salt and coarsely ground black pepper, then hung to air-dry for several weeks, without ever being smoked.

• Cut used: pork jowl or cheek.

• Cure type: dry cure is done for gyanciale with salt, black pepper, sometimes garlic or rosemary.

• Duration: roughly 1-2 weeks of curing, followed by 3-6 weeks of hanging to air-dry, until the jowl has lost about 30% of its original weight.

• Best known for: being the choice of meat in the authentic versions of carbonara, amatriciana, and gricia, and not bacon or pancetta.

Salted Pork vs Bacon

Salted pork is one of the oldest and simplest cured pork products, made by packing fatty cuts of pork, usually the belly or fatback, with a heavy layer of salt, either rubbed on dry or applied as a strong brine. Unlike bacon, it tends to skip nitrates altogether and is never smoked, relying on salt for preservation.

• Cut used: Pork belly or fatback (occasionally shoulder).

• Cure type: Dry salt packing or a strong salt brine, without nitrates in most authentic versions.

• Duration: Days to a few weeks, depending on the thickness of the cut and desired saltiness; some traditional versions lose 30-50% of their original weight during curing.

• Before cooking: Because it's so intensely salty, salted pork is usually soaked in cold water for one to three hours, with the water changed periodically, to draw the excess salt back out.

Is Spam Really a Cured Pork Product?

Spam looks nothing like the others on this list, but it belongs here, and it's a canned, cured pork product in its own right. It's made from roughly 90% chopped pork shoulder mixed with about 10% ham, combined with salt, sugar, water, potato starch, and sodium nitrite (the same preservative used in bacon), then packed into cans, vacuum-sealed, and cooked inside the tin.

• Cut used: Pork shoulder, blended with ham.

• Cure type: Salt, sugar, and sodium nitrite mixed directly into the ground meat.

• Duration: Minimal curing time compared to the others, since the product is fully cooked in the can rather than aged.

• Origin: Introduced by Hormel Foods in 1937, Spam became a global pantry staple after the Second World War, distributed to U.S. troops across the Pacific and folded into local cuisines in Hawaii, the Philippines, Japan, and South Korea.

What About Bacon Fat?

Bacon fat isn't a cured pork product on its own, because it's the fat left behind after cooking bacon, and it carries all of bacon's smoky, salty flavour with it. Once strained of any crispy bits, bacon fat can be stored in the refrigerator and works exactly like lard or tallow, perfect for many meat recipes.

• Use it to sauté greens, roast vegetables, or fry eggs for an instant hit of smoky flavour.

• Stir a spoonful into baked beans, cornbread batter, or stews, the way salted pork or bacon drippings have traditionally been used.

• Strain it through a fine-mesh sieve or cheesecloth before storing to prevent it from turning rancid.

• Keep it refrigerated in a sealed container and use it within a few months for the best flavour.

Bacon vs. Pancetta vs. Guanciale vs. Salted Pork vs. Spam

Laid side by side, the differences come down to three things: the cut of meat, whether it's smoked, and how long it cures.

How to Cook with Each Cured Pork Product

• Bacon: It needs to be cooked slowly in a skillet, so the fat melts off and the bacon starts getting crispy in bits. Save the dripping for something else.

• Pancetta: Do not buy sliced or pre-portioned pancetta, as it tends to be lower quality. Try to get the rolled or flat variety, then dice and sauté to render the fat without browning it too fast. Fold these into pasta or soup.

• Guanciale: Render over low-medium heat until the fat turns translucent and the edges crisp up. This product is prized for its fat, which forms the base of the sauce in dishes like carbonara.

• Salted pork: Soak to remove excess salt, then cube and simmer into beans, stews, or braised greens so the fat and flavour distribute through the dish.

• Spam: Slice and pan-fry until the edges caramelise; no soaking needed, since it's already fully cooked straight from the can.

How Good Are Cured Pork Products for You?

Cured pork products can fit into a balanced diet, but they're worth eating in moderation rather than daily. The World Health Organisation's International Agency for Research on Cancer (IARC) classifies processed meat, which includes cured pork, as carcinogenic to humans and recommends moderating intake rather than avoiding it entirely. The concern centres on N-nitroso compounds, which can form when nitrites react with proteins, particularly under high-heat cooking such as frying or grilling. 

Nitrates occur naturally in many vegetables too, though the accompanying nutrients in those foods appear to offset some of the risk in a way meat proteins don't. So, treat bacon, pancetta, guanciale, salted pork, and Spam as the occasional flavour additions to indulgent meals, rather than everyday protein sources, and watch the salt content too, since all of these are, by definition, salt-preserved.