How Long Does Horseradish Last?
Opened prepared horseradish lasts 3–4 months in the fridge at good strength. Unopened jars are sold refrigerated and keep until the date. Fresh horseradish root lasts 1–2 months in the fridge.
Horseradish — opened
shelf life- Unopened: 6–12 months in the fridge
- Whole: 1–2 months in the fridge
Fridge at 40°F (4°C) or below · freezer at 0°F (−18°C). Freezer times are for best quality; frozen food stays safe longer.
Prepared horseradish is grated horseradish root preserved in vinegar and salt. Its nose-burning heat comes from a volatile compound released when the root is grated; vinegar locks that heat in, but it still escapes steadily once the jar is opened. Old horseradish is rarely dangerous, just bland, bitter and brown.
How to store horseradish
- Keep prepared horseradish in the coldest part of the fridge with the lid screwed tight; warmth and air are what strip away its heat.
- Take out what you need and put the jar straight back. Even an hour open on a holiday table noticeably weakens it.
- Buy small jars. Horseradish is at full strength for only the first few weeks after opening, and then it declines steadily.
- Store fresh root unwashed in a loosely closed plastic bag in the crisper, and cut off only as much as you plan to grate.
- Freeze surplus prepared or freshly grated horseradish in tablespoon portions; it keeps its heat better frozen than it does in the fridge.
How to tell if horseradish has gone bad
- Color shifting from creamy white to tan, gray or brown, which signals oxidation and a bitter, weakened flavor.
- Little or no sinus-clearing heat when you smell or taste it, meaning it is past its useful life.
- Mold on the surface or under the lid, or a sour, rotten smell unlike the sharp vinegar-and-mustard aroma.
- Fresh root that is soft, shriveled, moldy or has dark, mushy spots inside when cut.
Bacteria that cause food poisoning usually do not change the look, smell or taste of food. Go by the time limits first, and the signs above second.
Horseradish shelf life chart
| State | Fridge | Freezer | Pantry |
|---|---|---|---|
| Opened | 3–4 months | 6 months | Not recommended |
| Prepared horseradish in vinegar. Creamy horseradish sauce with dairy or egg keeps 1–2 months opened. | |||
| Unopened | 6–12 months | Not recommended | Not recommended |
| Most prepared horseradish is sold from the refrigerated case; keep it cold from the store onward. | |||
| Whole | 1–2 months | 6 months | Not recommended |
| Fresh root, unwashed, wrapped loosely in a bag in the crisper. Grate before freezing. | |||
Not safe = perishable: no more than 2 hours at room temperature (1 hour above 90°F / 32°C). Not recommended = possible, but quality suffers or it serves no purpose.
Frequently asked questions
Does horseradish go bad?
Yes, though it usually loses quality long before it becomes unsafe. Prepared horseradish stays potent for about 3–4 months after opening in the fridge, then turns brown, bitter and mild. Throw it away if it grows mold or smells rotten; otherwise old horseradish is disappointing rather than dangerous.
Why has my horseradish turned brown?
Horseradish turns brown because it oxidizes as it ages and is exposed to air. Browning goes hand in hand with loss of heat and a more bitter taste. It is a quality change rather than a safety hazard, but most people find browned horseradish not worth using.
Does prepared horseradish need to be refrigerated?
Yes. Prepared horseradish should be refrigerated both before and after opening. It is sold from the refrigerated case because cold slows the loss of its volatile heat. A jar kept in the pantry fades within weeks, and creamy horseradish sauces containing egg or dairy must always stay cold.
Can you freeze horseradish?
Yes, horseradish freezes well for about 6 months. Freeze prepared or freshly grated horseradish in small portions in an airtight container or ice cube tray. Grate fresh root before freezing, since whole frozen root turns spongy. Expect a slight loss of pungency after thawing.
Related foods
| Food | Fridge | Freezer | Pantry |
|---|---|---|---|
| Mustard Opened |
1 year | Not recommended | 1–2 months |
| Ginger Whole |
3–4 weeks | 6 months | 1 week |
| Beef Roast Raw |
3–5 days | 4–12 months | Not safe |
| Relish Opened |
6 months | Not recommended | Not recommended |
| Hot Sauce Opened |
1–2 years | Not recommended | 6 months |
| Mayonnaise Opened |
2 months | Not recommended | Not recommended |
More condiments: Ketchup.
Reviewed 2026-09-20. Times follow published USDA FoodKeeper / FSIS, FDA and CDC storage guidance; where sources differ we use the shorter time. How we compile this data.