Can You Reheat Spinach?
Written by Jordan Morley · Reviewed against FSA/NHS reheating guidance · Last updated 28 October 2026
Yes, you can reheat spinach safely — once, until piping hot. The old warnings about reheating vegetables are myths.
What makes it safe (or not)
Reheating spinach is safe. You may have heard that vegetables like spinach or beetroot become dangerous when reheated because of nitrates — food safety agencies consider this a myth at normal dietary levels for adults; the nitrate caution applies mainly to preparing food for young babies. Follow the standard rules — cool within 2 hours, refrigerate, use within 2 days, reheat once until piping hot — and reheated spinach is fine.
You can also check the calorie content of spinach alongside its safety information.
How to reheat spinach safely
- Cool spinach within 2 hours of cooking and refrigerate in a sealed container.
- Use within about 2 days.
- Reheat with a splash of water, covered, until steaming hot throughout — 75°C (165°F).
- Eat immediately and don't reheat again.
As an Amazon Associate, CJ Affiliate and AWIN publisher we earn from qualifying purchases. Links below are affiliate links.
Reheat with confidence
Microwave plate cover
Traps steam so food heats evenly — the main cause of cold spots is dry heating.
Check Price →Meal prep containers
Shallow, microwave-safe portions cool faster and reheat more evenly.
Check Price →Links open your local Amazon store. We may earn a small commission at no extra cost to you.
Want to know exactly what's in your food? Our ingredient checker covers E-numbers, allergens and vegan status.
More kitchen essentials
Oven thermometer
Oven temperatures drift — a thermometer keeps cooking accurate.
Check Price →Spinach: the other answers on this site
| Question | Short answer (links to the full page) |
|---|---|
| In pregnancy | Safe — wash first |
| In the fridge | 3–7 days in the fridge |
Common questions
Isn't reheating spinach dangerous because of nitrates?
For healthy adults, no — the nitrate warning is a persistent myth at normal dietary levels. The caution about reheated high-nitrate vegetables applies mainly to food prepared for babies under about 12 months.
What is the best way to reheat spinach?
Microwave covered with a splash of water, or heat in a pan, until steaming hot throughout.
Can you reheat spinach twice?
The once-only rule applies to all reheated food, spinach included.
Can you reheat spinach in the microwave?
Yes — covered, with a splash of water, stirring once. It's the quickest way to get vegetables piping hot without overcooking.
Can you eat spinach cold?
Yes — properly stored cold cooked vegetables are fine within 2 days, straight from the fridge.
How long can I keep leftover spinach before reheating?
Within 2 days in the fridge is the NHS/FSA advice for cooked leftovers (the US USDA allows 3–4 days). Cool it within 1–2 hours of cooking and keep the fridge at 5°C or below.
Can I freeze spinach instead of reheating it?
Yes. Cooled promptly and frozen in portions, it keeps for around 1–2 months for best quality (USDA FoodKeeper), and stays safe beyond that. Defrost in the fridge, then reheat once until piping hot. See our freezing guide for the details.
Related answers
Primary source: FSA/NHS reheating guidance.
General information only, not medical advice: see the medical disclaimer. Feeling unwell after eating something? Contact NHS 111 or your GP.