Does Heat Destroy Honey? Hot Tea, Coffee, Cooking and Baking
Ask ten people whether you should put honey in hot tea and you’ll get ten answers. Some say heat “kills” honey. Some say heated honey becomes toxic. Some say it makes no difference. Here’s what actually happens.
Quick answer: Heat doesn’t make honey unsafe, but it does change raw honey. Its enzymes, like invertase, diastase and glucose oxidase, start to break down above about 104°F (40°C) and are largely destroyed at the 140-160°F used in commercial processing. Delicate aromas fade, and a compound called HMF slowly forms. Sugars, calories and minerals don’t change. To keep raw honey’s character, let tea or coffee cool a few minutes before stirring it in; for cooking and baking, any honey works.
What does heat do to honey?
Several things, depending on how hot and for how long.
| What changes | When | Why it matters |
|---|---|---|
| Enzymes (invertase, diastase, glucose oxidase) | Start declining above about 104°F (40°C); destroyed fast at 140°F+ | Glucose oxidase gives raw honey part of its antibacterial action |
| Aroma compounds | Fade with warmth, quickly with high heat | Raw honey’s floral, fruity notes are the first thing lost |
| HMF (hydroxymethylfurfural) | Forms slowly with heat and age | A quality marker; the Codex limit is 40 mg/kg |
| Color | Darkens with heat and time | Browning reactions, like caramelizing |
| Sugars, calories, minerals | Essentially unchanged | Nutrition label stays the same |
Is it okay to put honey in hot tea?
Yes. It’s safe, and honey in tea is still a good cough remedy. But water just off the boil, around 200°F, will quickly destroy raw honey’s enzymes and blunt its aroma. If you want to keep those:
- Steep your tea as usual.
- Wait three to five minutes, until you can comfortably sip it.
- Stir in your honey.
Coffee works the same way. Read more in herbal tea and honey.
Does heated honey become toxic?
No good evidence says so. The idea comes from Ayurveda, the traditional medicine of India, which teaches that heated honey becomes harmful. Heat does create HMF, a compound that also forms in coffee, toast, dried fruit and many cooked foods. The amounts produced in normal cooking are small, and honey that’s been heated is eaten safely around the world every day.
Should you bake with raw honey?
You can, but oven temperatures destroy raw honey’s enzymes regardless, so there’s no need to use your best raw honey in a cake. Choose by flavor instead: mild honey for subtle sweetness, dark honey like buckwheat for gingerbread and spice cakes. See baking with honey.
How do you warm crystallized honey without damaging it?
Set the closed jar in a bowl of warm water, around 95 to 110°F, the range of a beehive’s warmth, and stir now and then until it’s liquid. Avoid the microwave and boiling water, which overheat parts of the jar. See crystallized honey.
Why is commercial honey heated?
Packers heat honey, often to 140-160°F, to make it flow faster through filters and bottling lines, dissolve sugar crystals so it stays clear longer, and kill yeasts that could cause fermentation. That’s why most supermarket honey isn’t raw. See raw vs processed honey.
Frequently asked questions
At what temperature does honey lose its benefits?
Raw honey’s enzymes begin to decline above about 104°F (40°C) and break down quickly above 140°F (60°C). Sugars, calories and minerals don’t change with heat.
Does microwaving honey ruin it?
It destroys enzymes and can scorch parts of the jar, but it doesn’t make honey unsafe. For raw honey, a warm water bath is gentler.
Is honey in hot water still good for a sore throat?
Yes. Honey’s soothing coating and its sugars and acidity still help, even if some enzymes are lost. Studies showing honey eases coughs used honey given in many ways.
Can you cook with honey?
Absolutely. Honey is great in marinades, glazes, sauces and baking. Its flavor carries through cooking; its enzymes don’t.
Does freezing honey damage it?
No. Freezing doesn’t harm honey and slows crystallization. Let it come to room temperature before opening.
Sources
- Codex Alimentarius Commission. Standard for Honey (CXS 12-1981).
- Turkmen N et al. “Effects of prolonged heating on antioxidant activity and colour of honey.” Food Chemistry, 2006.
- White JW. “Honey.” Advances in Food Research, 1978.
Heat changes honey, but it doesn’t spoil it. Give your tea a few minutes to cool, and save your best raw honey for the moments you’ll taste it.
