Any tips for degassing blended soup?
I find creamy soups and many other thicker liquids too fluffy for my liking after blending. I could do it the old fashioned way by forcing through a mill/sieve; must I?
Any other tips to knocking out a few more bubbles besides a few bangs of the pot. I tried whisking and bubbles were at the surface but not sure if whisking indeed created them.
Best Answer
Use a vacuum pump. People who pour liquid rubber into moulds use a vacuum chamber to get the bubbles out; I've heard of people degassing wine with a vacuum pump (see these youtube videos, for example); I wouldn't know why it wouldn't work for soup.
The question is of course where you get a vacuum pump. If you're doing this in a commercial kitchen I'm sure there are channels where you can get a professional one. For the home cook (like me), one option (inspired by one of those videos) would be to pour it into a wine bottle and then use a wine saver; Vacu Vin is a well known brand. You probably won't want to fill the bottle more than half full, especially if the liquid is very thick; the bubbles in the liquid will expand a lot if you lower the pressure, and it will raise the level of the liquid.
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How do you get air bubbles out of soup?
Use a vacuum pump. People who pour liquid rubber into moulds use a vacuum chamber to get the bubbles out; I've heard of people degassing wine with a vacuum pump (see these youtube videos, for example); I wouldn't know why it wouldn't work for soup.How do you cool down soup before blending?
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Answer 2
Separate the liquid from the solids before blending. Use a fine colander, or coarse sieve
Use a chopper style food processor or a sturdy masher to blend down the solids in a strong bowl, and then add that blend back to the soup. I always leave some extra chunky bits for interesting textures
Blending with a gelatinous liquid (typical of soup) will result in a heavy foam, which may not dissipate for quite some time
Note: In general, most vegetable matter will become softer and breakdown quicker with just cooking if it is in an alkaline liquid. A pinch or two of baking soda may help. e.g. A 1/4 tsp of baking soda will render two onions to mush in about five to ten minutes
Add some neutralising acid (a splash of vinegar or lemon juice), and oily and other acidic components (e.g. tomatoes) near the end of cooking if possible
Answer 3
VacuVin has vacuum pumps and containers for food as well as wine. I purchased a 1.3 liter container and their super pump and used them on a food mixture I prepare to feed my cat through an e-tube. This pulled the micro-bubbles (created by the "liquify" setting on my inexpensive blender) to the top and I mashed them against the side of the container with a flexible spatula. Got rid of most of the bubbles.
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