Capers
Capers are the pickled flower buds of Capparis spinosa, a Mediterranean shrub. They are low in calories and contain compounds with mild antioxidant properties, though their nutritional impact is modest given typical serving sizes.
Also known as: caper buds, Capparis spinosa, pickled capers
Scientific & Editorial Standard: This information is synthesized from peer-reviewed databases (such as PubMed, NIH, NHS, and Mayo Clinic) and validated using multi-model cross-referencing by the Plateify Editorial Team. It is intended for educational purposes and is not medical advice. If you suspect food sensitivities, consult a healthcare provider.
Capers are the unopened flower buds of the caper bush, native to the Mediterranean and parts of Asia. They are harvested green and preserved in vinegar brine or dry salt, which gives them their characteristic tangy, briny flavor. Capers are used as a flavoring condiment in Mediterranean and Middle Eastern cuisines, particularly in pasta dishes, salads, fish preparations, and sauces. They are graded by bud size, with common grades including nonpareil (the smallest and most prized), surfines, capucines, and capotes.
A 100-gram serving of capers contains approximately 23 calories, 2.4 grams of protein, and around 4.9 grams of carbohydrates, with less than 1 gram of fat. The pickling process means capers are high in sodium—roughly 2,964 mg per 100 grams according to USDA data—making them a salt-dense condiment. Capers contain flavonol compounds, including quercetin and kaempferol, which are polyphenols with antioxidant activity. Because capers are typically consumed in small quantities (1–2 tablespoon servings), their direct nutritional contribution is minimal. The vinegar and salt used in preservation may influence digestive tolerance in sensitive individuals.
Sodium and Blood Pressure
Due to their high sodium content from pickling, capers are not suitable as a staple food for individuals managing sodium intake or hypertension. A single 1-tablespoon serving (approximately 9 grams) contains roughly 267 mg of sodium, representing approximately 12% of the FDA's 2,300 mg daily recommended limit. People following a low-sodium diet should account for capers as a high-sodium flavoring and limit portion size accordingly.
Tolerance and Dietary Considerations
Capers are generally well-tolerated in small quantities. The high salt content may trigger symptoms in individuals with salt sensitivity, acid reflux, or certain digestive conditions. Capers are preserved in vinegar brine or salt rather than fermented via microbial activity; however, histamine can accumulate in pickled and brined foods over storage time. For individuals with histamine intolerance, freshly opened capers are likely lower in histamine than long-stored varieties. Capers contain no common allergens (gluten, tree nuts, shellfish, soy, or dairy) and are not known to be high in other common irritants. Standard culinary portions (1–2 tablespoons) are unlikely to cause adverse effects in most people.
Frequently Asked Questions
Are capers high in sodium?
Yes. Capers are preserved in salt brine and contain approximately 2,964 mg of sodium per 100 grams according to USDA data. A 1-tablespoon serving (about 9 grams) contains roughly 267 mg of sodium, or approximately 12% of the FDA's recommended daily limit of 2,300 mg. People managing sodium intake should use capers sparingly.
Do capers contain histamine?
Capers are preserved in vinegar brine or salt, not fermented via microbial activity. However, histamine can accumulate in pickled and brined foods over storage time. Freshly opened capers are likely lower in histamine than long-stored varieties. Individuals with histamine intolerance may need to limit or avoid them.
Can I eat capers on a low-FODMAP diet?
Capers have been tested by Monash University and are considered low FODMAP in small serving sizes such as 1 tablespoon. Larger quantities may become high FODMAP. Individuals following a low-FODMAP diet should stick to small portions, and those with significant digestive sensitivities should consult a clinician or registered dietitian for personalized guidance.
Sources
- FoodData Central – Capers, canned — USDA
- High Salt Intake and Health — American Heart Association
- Histamine and Histamine Intolerance — NIH / PubMed
Educational content: This page is for general informational purposes only. Individual responses to foods vary widely. If you suspect a food allergy or sensitivity, consult a licensed dietitian, allergist, or physician before making dietary changes. Full disclaimer
Some content on this site is AI-assisted. While we strive for accuracy, information may not reflect the latest research. Always verify health information with a professional.
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