Meat and Poultry

When does a Lamb Become Mutton?

Sara
By Sara . Updated: June 15, 2026
When does a Lamb Become Mutton?
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For the preparation of a perfect dish, choosing the right ingredients is extremely necessary. In the culinary world, there are numerous ingredients, and being able to differentiate between them is important. Two of the most confused ingredients in the meat section are lamb and mutton. In this OneHowTo article, we will tell you when a lamb becomes mutton.

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Contents
  1. Lamb and mutton meat
  2. Difference between lamb and mutton meat
  3. Best lamb meat

Lamb and mutton meat

The source of both lamb meat and mutton is domestic sheep. Although both meats are from the same source, the difference is due to the age of the sheep. Lamb meat is obtained from sheep younger than one year. Mutton is the meat of sheep that are at least one year old.

To obtain lamb meat, sheep are typically slaughtered between the ages of four and twelve months. The meat of sheep aged 5 to 6 months is sold as spring lambs, while those aged 6 to 10 months are called baby lamb. The best lamb meat is often considered to be pré-salé, which comes from sheep grazing on salt marshes. On the other hand, sheep slaughtered between 12 to 20 months of age provide meat known as mutton or yearling mutton.

Difference between lamb and mutton meat

When going to market to buy meat, you must be cautious. Stores may sometimes sell lower-priced mutton as high-priced lamb meat. However, you can avoid being duped by keeping in mind the differences between lamb meat and mutton.

  • When you place a piece of lamb meat beside mutton, the difference in color is quite apparent. Mutton has a deeper color than lamb. The color of lamb meat ranges from light pink to dark pink, whereas mutton ranges from light red to dark red.
  • Mutton has a stronger flavor compared to lamb meat. Lamb meat has a mild, subtle flavor, and milk-fed lamb, in particular, has a very delicate taste.
  • Lamb meat is tender and is usually served roasted. One of the most popular lamb recipes is lamb chops. It is often stewed and incorporated into dishes such as lamb couscous. Lamb meat also contains less fat than mutton. Ground lamb is frequently used in recipes as a substitute for ground beef. Mutton, being tougher than lamb meat, is usually stewed to tenderize the meat.
  • It should be noted that the cooking methods for lamb and mutton can significantly affect the flavor and texture. For example, lamb is often grilled or seared, while mutton is better suited for slow-cooking methods like braising or stewing, which enhance its robust flavor.
When does a Lamb Become Mutton? - Difference between lamb and mutton meat

Best lamb meat

Most people believe that lamb pré-salé is the best and finest lamb in the world. The wonderful, delicate flavor of this lamb meat is due to the grass that it grazes on the salty shores of Brittany and Normandy. Additionally, these regions are known for their unique climate and soil conditions, which contribute to the distinct taste and quality of the lamb. The combination of salty air and rich pastures results in meat that is both tender and flavorful, making it a prized choice for chefs and food enthusiasts alike.

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Sharmama
Correction needed to comment made about lamb 6 to 10 month old, not years
OneHowTo Editor
Sorry for the typo, it has been fixed. Thank you!
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When does a Lamb Become Mutton?