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Jan 29, 2026

What Those White Bits in Spam Actually Are

What Those White Bits in Spam Actually Are

source: freezelight/Wikimedia

I cut open a can of Spam one day and right away saw white lumps of fat in the Spam. My initial reaction was that they looked like mold. I just stood there staring at them, questioning if I had possibly ruined my lunch. If you have ever found white specks in your canned meat and instantly panicked, I totally understand.

What is Inside of Spam?

To begin to calm my fears, I needed to learn what is inside of Spam. Spam is a pre-cooked canned meat product, created by combining pork and ham. The main components of Spam are pork and ham, salt, water, modified potato starch, sugar, and sodium nitrite (preservative). So, that’s it, no weird lumps added to your Spam.

Like most processed foods, Spam contains pork fat within the meat itself because Spam is created using the entire cut of pork, including both the lean meat portion and fat portions. Fat is used for a variety of purposes and is not just “filler,” it adds to texture, moisture, and overall flavor of the Spam. Without fat, Spam would be dry and crumbly, not sliceable and moist.

Spam is made from cutting and grinding the meat together with seasoning and preservatives; placing the meat mixture into cans; sealing the cans; and then cooking the meat inside of the cans. This sealed cooking method is important for ensuring that the canned meat is safe for long-term storage.

spam meat

source: BrokenSphere/Wikimedia

What Are Those White Lumps in Spam Actually?

Upon researching and reading labels, I discovered that the white lumps of fat in Spam are normally solidified fat. Occasionally, you might find tiny particles of connective tissue in the fat as well, which is perfectly normal in processed meats.

Here is what happens: solidified fat has a white or off-white appearance. Pork fat appears white when it is cold and solidified, and when you store Spam in the fridge, the fat will become even firmer.

One reassuring factor for me was realizing that the white spots in Spam were uniform throughout the can. Mold will not spread evenly throughout an enclosed product such as a can of Spam. Instead, mold typically forms on the surface of the product in clumps, not dispersed throughout the product.

For me, the simplest way to determine if your white lumps in Spam are mold or just fat is to examine their texture and uniformity. If the white lumps are uniform and resemble part of the meat’s composition, you’re likely just viewing fat.

Is It Mold Or Just Fat?

We need to answer the obvious question now: Is Spam mold when you see white chunks in it? Typically not.

Fat has its own unique features. Fat feels smooth, solid, and it fits nicely into the rest of the meat. Fat is typically white or slightly creamy in color. Upon opening the can of Spam, there will not be any strong odor, just the standard salty smell of canned meat.

On the other hand, mold has very distinctive features. Mold is generally fuzzy or powdery. Mold is commonly blue, green, gray, or black. Mold grows on the surface of products, not evenly throughout the product. Also, trust me on this, if you have a strong, sour, or otherwise bad smell coming from the Spam after you open it, it’s moldy.

Since Spam is sealed and heat-processed, mold growth inside of Spam is very rare unless the can has been damaged. However, if the can remains unopened and properly stored, the odds of mold growing internally are minimal.

a can of SPAM

source: AustinNeil/Wikimedia

When Should You Get Rid Of It?

As previously stated, while the white lumps in Spam are typically harmless solidified fat in Spam, there are circumstances in which you should discard the product entirely.

Be aware of the following warning signs:

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