Food
Renkon (Lotus Root)
蓮根 (Renkon)
Also known as: Nelumbo nucifera rhizome, Lotus Root, Hasu
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| Category | Food |
|---|---|
| Origin | Aquatic vegetable (rhizome of Nelumbo nucifera); primary production in Ibaraki Prefecture (Kasumigaura area, ~50% of national supply), Tokushima, Saga, and Yamaguchi |
| Typical functions | Fresh consumption (sliced for kinpira, chips, tempura), Pickle substrate (subazuke vinegar pickle), Functional ingredient claim (mucin polysaccharide, tannins) |
| Regulatory status in Japan | Permitted as a food and food ingredient under the Food Sanitation Act. No category-specific restrictions for ordinary culinary use. |
Renkon (lotus root) is one of the iconic Japanese ingredients with deep cultural resonance — the holes through the rhizome are auspicious (見通しが利く / clear-sighted view) and renkon appears at New Year and other celebratory occasions. For OEM buyers, renkon is the substrate for pickle (subazuke) production, cut-vegetable retail, frozen-vegetable OEM for foodservice, and an increasingly important functional-food ingredient citing tannin and mucin polysaccharide content. Ibaraki Prefecture produces approximately half of the national supply, concentrated around Kasumigaura.
Classification
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Common OEM product categories
Finished-product categories where Japanese OEM manufacturers commonly formulate with this ingredient.
- Cut renkon retail (sliced rings, vacuum-packed)
- Pickled renkon (subazuke) OEM
- Frozen sliced renkon for foodservice
- Renkon powder / extract for functional food OEM
Ingredient profile
Renkon is the edible rhizome of the lotus plant (Nelumbo nucifera). The plant grows in shallow water across paddy-style fields, with the rhizomes harvested by hand or water-jet method from autumn through spring. The characteristic holes in cross-section are the air channels of the rhizome — typically 9–10 holes arranged radially.
Renkon contains starch as the primary carbohydrate, plus mucin polysaccharide responsible for the slight viscosity on cutting, tannins responsible for the slight astringency and post-cut browning, and a range of B vitamins and vitamin C. Industrial OEM processing typically uses pre-peeled, pre-sliced rhizome in vacuum-pack format for cut-vegetable distribution, and intact rhizome for pickle and frozen-vegetable production.
OEM applications
In Japanese food OEM, renkon appears as pre-cut vacuum-packed rings for retail and meal-kit channels; as the substrate for subazuke (vinegar pickle) OEM particularly for Osechi New Year products; as frozen sliced renkon for foodservice ramen chain and meal-prep OEM; as renkon powder or extract input for functional food and tea products citing tannin or mucin polysaccharide; and as kinpira-renkon and renkon-no-hasamiage prepared-product OEM.
Regional differentiation matters commercially. Kasumigaura (Ibaraki) renkon is the volume supply for cut-vegetable and pickle OEM. Iwakuni (Yamaguchi) renkon is positioned as premium for its longer, thinner rhizome and finer starch quality, used in higher-end OEM SKUs. Bichu (Tokushima) renkon supplies the Kansai-area pickle and OEM volume market.
Regulatory classification in Japan
Renkon as fresh vegetable, frozen vegetable, and processed pickle is subject to the Food Sanitation Act, including residual pesticide standards (note that aquatic vegetable cultivation has distinct pesticide-use patterns compared to terrestrial vegetable crops) and additive regulation for any preservatives, vinegar, or seasonings used during pickle processing.
Functional or health claims linking renkon to specific physiological functions require Foods with Functional Claims notification with supporting evidence; ordinary food labelling cannot make therapeutic claims about tannin or mucin polysaccharide content.
Regulatory classification in other markets
| Global | Fresh and processed renkon is generally allowed in most destination markets subject to plant-quarantine requirements for fresh shipments. Permitted as food ingredient in EU, UK, US, China, Korea, and ASEAN markets. Note that lotus root is also commercially produced in China, India, and Vietnam — destination-market consumers may associate 'lotus root' with the Chinese or South-East Asian commodity supply unless Japan-origin is explicitly labelled. |
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Market reference formulations
Example finished products will be added after verification of prefecture of origin (Kasumigaura / Iwakuni / Tokushima), cultivar, and processing method (fresh / pickled / frozen) per the editorial policy.
All brand names and product names referenced anywhere on this site are the property of their respective owners. Example entries are provided for informational purposes only and do not imply endorsement.
Quick answers
- What is Renkon (Lotus Root)?
- Renkon (lotus root) is one of the iconic Japanese ingredients with deep cultural resonance — the holes through the rhizome are auspicious (見通しが利く / clear-sighted view) and renkon appears at New Year and other celebratory occasions. For OEM buyers, renkon is the substrate for pickle (subazuke) production, cut-vegetable retail, frozen-vegetable OEM for foodservice, and an increasingly important functional-food ingredient citing tannin and mucin polysaccharide content. Ibaraki Prefecture produces approximately half of the national supply, concentrated around Kasumigaura.
- What is the regulatory status of Renkon (Lotus Root) in Japan?
- Permitted as a food and food ingredient under the Food Sanitation Act. No category-specific restrictions for ordinary culinary use.
- What products typically use Renkon (Lotus Root)?
- Cut renkon retail (sliced rings, vacuum-packed) / Pickled renkon (subazuke) OEM / Frozen sliced renkon for foodservice / Renkon powder / extract for functional food OEM
- Where does Renkon (Lotus Root) come from?
- Aquatic vegetable (rhizome of Nelumbo nucifera); primary production in Ibaraki Prefecture (Kasumigaura area, ~50% of national supply), Tokushima, Saga, and Yamaguchi
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References
Last updated: 2026-05-30. Ingredient entries are reviewed at least annually against current regulatory listings.