Mayonnaise

Kewpie

Mayonnaise

Good Medium confidence
Ingredient Integrity 52

Rapeseed oil primary ingredient flagged as negative signal; lacks organic or verified non-GMO status.

Processing Level 68

Standard refined oil processing without cold-pressed or expeller-pressed methods disclosed.

Evidence & Transparency 45

Manufacturing location disclosed but missing oil extraction method and egg welfare certification details.

Product Quality 62

Yolk-only formulation and preservative-free recipe elevate above basic options but lack premium oils.

Ingredients

Rapeseed Oil (71%)Egg Yolk (15%)WaterSpirit VinegarSaltSugarApple VinegarRed Wine VinegarMustard PowderFlavourings (Mustard). Note: Ingredient formulations vary by market; some regional variants may include different vegetable oils (soybean)grain vinegar with barley maltMSGand spice extracts. The UK/EU formulation uses rapeseed oil as primary ingredientwhile other markets may use different oil blends.

Certifications

Gluten Free (confirmed on UK/EU variants and official Mild Gluten Free lineup)

Sourcing

Manufactured by Kewpie Corporation with Japanese origin and brand heritage. EU market products are manufactured by Mosso Kewpie Poland Sp. z o.o. and distributed through Kewpie Trading Europe. The product emphasizes egg yolk sourcing (only yolks, not whole eggs) and features egg sustainability programs including eggshell recycling. Uses specialized vinegar blend developed through Kewpie's R&D. Export lineup indicates global manufacturing and distribution network across USA, Europe, and Asia-Pacific markets.

Transparency notes

High transparency on official manufacturer pages with detailed product lineup including JAN codes, carton specifications, and export SKU details. Emphasizes egg yolk-only formulation, preservative-free approach, and sustainability practices. Retailer pages provide complete ingredient panels with allergen information. Some regional variation in formulation noted across markets with appropriate labeling guidance.

Origin Japan (brand origin); regional manufacturing includes Poland for EU market variants
Last verified June 2026