I have a braun stick blender that I bought about 10 years ago. I love it because it's really versatile and I can make puree soups, etc. I usually will stick the immersion blender into the pot of hot mixture to puree the mixture. Is this safe?


Is putting plastic in the hot mixture safe?

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    What do you mean by "safe"? Are you concerned about, for instance, BPA from the plastic leaking into your food? About the plastic melting? – Laura Jan 5 '12 at 20:27
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    @Laura : Yes...to all of the above. I'm concerned that the age of my immersion blender places it before BPA was in our consciousness. I guess I can call up Braun to ask them about safety of the plastic in hot mixtures. – milesmeow Jan 6 '12 at 11:27
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    If you do speak do Braun, be sure to report back to us! – Laura Jan 6 '12 at 16:07

Short of the danger of splashing hot liquid on you, or the standard immersion blender dangers of having it slip and hit you, there's no additional risk with using immersion blenders on hot mixtures. Making hot soups creamy is pretty much exactly what they are designed for.

  • I concur. I use mine to puree soup all the time. – Laura Jan 5 '12 at 18:28
  • my metal blender had a warning saying not to use in hot liquids, I had guessed this was due to splashing. – Manako Jan 6 '12 at 17:07

I'm afraid I don't that hard evidence to back up the following statements, but I thought I'd offer my thoughts based on the clarifications to the question from the OP's comments.

  1. Regarding BPA/chemicals leaching into food: This is likely a concern for most plastic products produced before a year or two ago (and a good number of them that have been produced recently, too). However, I would say that in the grand scheme of health hazards related to cooking gear and food, your plastic immersion blender is mostly on the "Don't worry about it" end. You aren't storing food in this object, just putting it into contact with your food for a few seconds to a few minutes. Yes, if the food is hot, there will probably be some leaching of chemicals, but it should be minuscule.
  2. Regarding the possibility of the plastic melting: Again, I don't really have an evidence to back this up, but I'd say you're pretty safe on this front, too. Braun is an established and respected brand, so they likely test their products pretty vigorously before sending them to market. It's hard for me to imagine them producing an immersion blender that is not safe to use with hot foods. Additionally, if you've been using the immersion blender for 10 years and haven't had an issues yet, you're probably more likely to have the motor wear out than to have to deal with melting plastic.

My blender just melted (distorted shape) in hot soup and the blade took lumps out of the bottom of the metal pot. Had to throw the whole batch away.


Not so sure. My blender got ruined and plastic started running into it since I was blending hot coffee in it every morning. Now its ruined and I have to buy a new one.

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    Was it an immersion blender? And what do you mean "plastic started running into it"? Like the heat of the coffee was melting streams of plastic that ran into the vortex? – SourDoh Feb 1 '14 at 16:29

December 4, 2018: my plastic immersion blender melted while I was blending a hot mixture. Somewhat beyond hot. Let’s call it, “boiling.” The blade was making an awful sound, hot liquid was splattering onto the wall for a few seconds. Part of the horrid sound was bits of plastic rattling around in the mixture I was blending. Probably going to replace it with metal since I can’t guarantee that I’ll remember my error well enough not to repeat it!

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