Long Storage

Ingredients that keep well at room temperature, refrigerated, or frozen — great for planning ahead

A good rule for storing vegetables is to mimic their growing environment — store daikon and green onions upright for longer shelf life. When placing them in the vegetable crisper, wrapping in newspaper or paper towels before putting in a plastic bag maintains appropriate humidity and prevents drying. If you can't use everything in time, cutting into convenient sizes while fresh and freezing is the most reliable method. Frozen fish fillets, dried fish, and salt-cured seafood all keep for long periods and are handy staples to stock.

22 items 5 in peak season

Recommended Ingredients

01

Apple

りんご Fruit

With proper temperature management, apples can maintain quality for months.

Months-long storageRetains freshness well

1-2 months refrigerated, 1-2 weeks at room temperature

¥879 /1kg
Annual Avg
02

Burdock Root

ごぼう Vegetable

Prevent drying and store in a cool, dark place to preserve flavor for extended periods.

Room temp storage OKFlavor lasts well

Mud-on refrigerated: 2-3 weeks; washed: 4-5 days; frozen: 1 month

¥1,120 /1kg
Annual Avg
03

Butterbur

ふき Vegetable Peak

Blanched and stored in water, keeps 1 week refrigerated. Tsukudani extends storage further.

Blanch to preserveTsukudani for long storage

Blanched and submerged: 3-4 days refrigerated, 1 month frozen

04

Carrot

にんじん Vegetable

Wrap in newspaper in the crisper for weeks of freshness.

Weeks in the fridgePantry staple

2-3 weeks refrigerated, 1-2 months frozen

¥537 /1kg
Annual Avg
05

Chestnut

Fruit

Store in the shell chilled, or boil and freeze to enjoy autumn flavor for months.

Freezable after cookingAutumn flavor preserved

1 month refrigerated (sweetness develops over time), 3-6 months frozen

06

Daikon Radish

大根 Vegetable

Remove leaves, wrap in newspaper, and store in a cool spot for extended freshness.

Room temp OK in winterRemove leaves first

1-2 weeks refrigerated, 1 month frozen (after blanching)

¥226 /1kg
Annual Avg
07

Shrimp

えび Seafood

Freezes well; thaw only the portions you need. Pre-cooked frozen shrimp is ready to eat.

Freezer-friendlyPre-cooked

1-2 days refrigerated (cooked); about 1 month frozen

¥356 /100g
Annual Avg
08

Garlic

にんにく Vegetable Peak

Store in a cool, ventilated spot, or peel and freeze or preserve in oil for even longer.

Freeze or oil-preserveAlways-on-hand seasoning

1-2 months at room temperature, 3 months refrigerated, 6 months frozen

09

Ginger

しょうが Vegetable

Submerge in water in the fridge, or grate and freeze — both methods extend life significantly.

Water-submerge methodFrozen grate is handy

New ginger: 1 week refrigerated; mature ginger: 1 month refrigerated; 3 months frozen

¥2,276 /1kg
Annual Avg
10

Scallop

ほたて Seafood Peak

Typically stored frozen; thaw only what you need to avoid waste.

Freezer-friendly

1-2 days refrigerated; about 1 month frozen

¥427 /100g
Annual Avg
11

Squid

いか Seafood

Typically frozen; rings and pre-cut packs are handy and keep for months.

FrozenPre-cut packs

1-2 days refrigerated; about 1 month frozen

¥231 /100g
Annual Avg
12

Sardine

いわし Seafood

Canned, dried, or as niboshi stock fish — multiple long-keeping forms.

CannedDried / niboshi

Same day to 1 day refrigerated; 2-3 weeks frozen

¥99 /100g
Annual Avg
13

Kabocha Squash

かぼちゃ Vegetable

Whole, uncut kabocha keeps for months in a cool, dark place without losing nutrition.

Lasts months wholeNutrition stays intact

Whole: 2-3 months at room temperature; cut: 3-4 days refrigerated; 1 month frozen

¥603 /1kg
Annual Avg
14

Lotus Root

れんこん Vegetable

Wrapped in newspaper with mud intact, keeps 2-3 weeks refrigerated.

Keeps with mud on2-3 weeks refrigerated

Mud-on refrigerated: 2-3 weeks; cut surface refrigerated: 3-4 days; frozen: 1 month

¥1,277 /1kg
Annual Avg
15

Mandarin Orange

みかん Fruit

A bulk winter box keeps for weeks in a cool, ventilated area.

Weeks in cool storageWinter vitamin source

2-3 weeks at room temperature, 1 month refrigerated

¥853 /1kg
Annual Avg
16

Napa Cabbage

白菜 Vegetable

In cool weather, wrap in newspaper and store upright for extended freshness.

Upright storage lastsWinter pantry staple

Refrigerated: 2-3 weeks (whole), 3-4 days (cut)

¥267 /1kg
Annual Avg
17

Onion

玉ねぎ Vegetable Peak

Hang in a shaded, ventilated spot to prevent sprouting for months.

Hang to store for monthsKeep away from moisture

1-2 months at room temperature (cured onions), new onions 1-2 weeks refrigerated

¥418 /1kg
Annual Avg
18

Potato

じゃがいも Vegetable Peak

Store in a dark, cool place to suppress sprouting — a stockpile staple.

Dark storage prevents sproutsStockpile champion

Cool dark storage: 1-2 months; refrigerated: 2-3 months; frozen (cooked): 1 month

19

Mackerel

さば Seafood

2–3 weeks frozen. Salted saba and canned saba keep much longer.

Frozen 2–3wCanned keeps

1-2 days refrigerated after gutting; 2-3 weeks frozen

¥153 /100g
Annual Avg
20

Salmon

さけ Seafood

Salt-cured and frozen salmon keep for long periods — ideal pantry protein.

Salt-curedFrozen fillets

2-3 days refrigerated; up to 1 month frozen

¥513 /100g
Annual Avg
21

Sweet Potato

さつまいも Vegetable

Wrap in newspaper at room temp — sweetness actually increases over time in storage.

Sweetens over timeRoom-temp storage OK

1-2 months at room temperature

¥675 /1kg
Annual Avg
22

Ume

Fruit

Processed into umeboshi or umeshu, keeps for years. A quintessential Japanese preserved food.

Umeboshi keeps yearsJapanese preserved food

Green ume: 3-4 days at room temperature; ripe ume: 1-2 days refrigerated

Frequently Asked Questions

Which food lasts longest at room temperature?

Onions keep 2+ months in a cool, dark, ventilated spot. Whole kabocha lasts 1–2 months, and sweet potatoes 1–2 months. Dried and salt-cured fish also store at near-ambient conditions.

Which foods should not be frozen?

Lettuce, cucumbers, and daikon have high water content and lose their texture when frozen. Daikon can be grated and then frozen. Raw sashimi-grade fish risks freezer burn, so cook-grade fillets or dried fish are better for long freezer storage.

What is the most important rule for storing food?

Three basics: prevent drying, store at appropriate temperatures, and separate ethylene-producing items (like apples) from other produce. Seafood should be frozen as soon as possible after purchase to preserve freshness.

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