Keep in mind pressure can blow the lid right off as hot food explodes out the top of the blender jar. First there is a good chance you will burn your face and your neck and then there is the clean up. The only thing worse from cleaning up after the blender blowing off its lid from a jarful of hot soup is cleaning up after a blender full of raspberries. Safety is not a laughing matter.
PUREE HOT FOOD IN THE BLENDER SAFELY
1. Pour the hot food into a heatproof pitcher or a large measuring cup.
2. Plug in the blender and set the blender speed for slow.
3. Pour about a 1/4 cup of hot food into the blender jar.
4. Place the lid on.
5. Insert the lid cap.
6. Place your hand on the lid and the lid-cap and apply pressure to hold it down.
7. With the other hand hit the puree button.
8. After the start-up you can safely remove your hand from the lid and the lid-cap.
9. Let the food puree to the desired consistency.
10. Place your hand back on the lid and lid-cap and apply pressure to hold it down.
11. With your other hand hit the fast speed button.
12. After the start-up you can safely remove your hand from the lid and lid-cap.
13. Keep the blender going and remove the lid-cap, but leave on the lid.
14. Gradually start adding from the remaining hot food through the hole where the lid-cap used to be. Do not pour all the remaining hot food into the blender jar all at once.
15. Keep the blender going until you are satisfied the hot food is thoroughly pureed.
16. During the process the hot food will cool down a little, so you may consider reheating before serving.