Leek
CautionVegetable
Leeks are a type of vegetable related to onions and garlic, commonly used in various cuisines for their mild, sweet flavor.
What is Leek?
Leeks are a member of the Allium family, which also includes onions, garlic, and shallots. They have a mild, sweet flavor and are used in a variety of dishes such as soups, stews, and salads. The plant consists of a bundle of leaf sheaths, sometimes mistakenly called a stem or stalk. While leeks are generally nutritious, containing vitamin K, vitamin C, and manganese, they also contain varying levels of FODMAPs depending on the part of the plant consumed.
Also known as:
Unsure about an ingredient? Scan it instantly.
Try SpoonfulDiet Compatibility
Leek bulbs are high FODMAP, while leek leaves are low to moderate based on serving size. We recommend avoiding foods with "leek" when the labels does not differentiate between the two.
Learn more →This ingredient is generally considered compatible with a Alphagal diet.
Learn more →This ingredient is generally considered compatible with a Dairy Free diet.
Learn more →This ingredient is generally considered compatible with a Gluten Free diet.
Learn more →This ingredient is generally considered compatible with a Vegan diet.
Learn more →This ingredient is generally considered compatible with a Vegetarian diet.
Learn more →Compatibility ratings are general guidelines and may vary by individual. Always consult a healthcare professional for personalized dietary advice.
Why People Avoid Leek
People on a low-FODMAP diet may avoid leeks because the bulb portion of the leek is high in FODMAPs, which can cause digestive discomfort in sensitive individuals. The leaves, however, are considered low to moderate in FODMAPs and may be consumed in small quantities without adverse effects. When food labels do not specify which part of the leek is used, it is often safer for individuals on a low-FODMAP diet to avoid the product.
Potential Reactions
- Bloating
- Gas
- Abdominal pain
This information is for educational purposes only and should not be considered medical advice. Individual reactions can vary. Consult a healthcare professional if you have concerns about specific ingredients.
Spoonful flags ingredients that don't match your diet.
Get the AppFoods That Commonly Contain Leek
Browse products that match your diet.
Explore ProductsFrequently Asked Questions
Your Personal Ingredient Scanner
Spoonful helps thousands of people with dietary restrictions shop safely. Scan barcodes, read labels, and find safe alternatives — all in one app.

Take the Guesswork Out of Grocery Shopping
Join thousands who use Spoonful to find foods that match their dietary needs.