Thickening soup? Any chefs in the house?

imported_Stew

Golden Member
Apr 23, 2005
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I want to make my Cream of Mushroom soup thicker.

It says on the can to add a cup of milk, slowly. Does the soup get thicker if you add it slowly?

Will it thicken if I leave it on low heat for a while?
 

Zanix

Diamond Member
Feb 11, 2003
5,568
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Let the milk steam off, or add cornstarch, or flour I think.
 
Jan 18, 2001
14,465
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i doubt it.

try melting a tablesp of butter and then adding a teaspoon of flour to the butter before you add soup and milk.
 

djheater

Lifer
Mar 19, 2001
14,637
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Cornstarch, flour, pureed potato, pureed squash. You can cook it down too... but then don't add the milk, you don't want the milk to boil.
 

Atomicus

Banned
May 20, 2004
5,192
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when adding cornstarch, MIX IT WITH WATER UNTIL THE CORNSTARCH IS ALL DISSOLVED

other than that, have fun :p
 

iamme

Lifer
Jul 21, 2001
21,058
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i find it interesting that you're asking questions about soup and your name is Stew.....
 

torpid

Lifer
Sep 14, 2003
11,631
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76
You add it slowly so that it mixes better.

If you cook it long enough it will become thicker by way of reduction, but it would take a long time at a low setting.
 

spidey07

No Lifer
Aug 4, 2000
65,469
5
76
if you use cornstarch be careful with it...it only takes a little bit, like less than a teaspoon.

you'll see the full thickening power once it boils.
 

giantpinkbunnyhead

Diamond Member
Dec 7, 2005
3,251
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Corn starch or flour will work... It will take 2x as much flour to thicken the same as x amount of corn starch.

Be careful though... flour or corn starch MUST be mixed with COLD water or milk before being added to anything warm. If you add the corn starch or flour to warm liquids, it will clump up and ruin your dish. Try dissolving 1 tsp of corn starch in 1/4 cup of cold milk; then add this to the soup and heat it up. Don't boil it but get it warm... it will thicken up in 5 minutes.
 

DaShen

Lifer
Dec 1, 2000
10,710
1
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Originally posted by: Stew
I want to make my Cream of Mushroom soup thicker.

It says on the can to add a cup of milk, slowly. Does the soup get thicker if you add it slowly?

Will it thicken if I leave it on low heat for a while?

Bacon Fat is the traditional route, and then add cream slowly.

The quicker method is flour or corn starch.
 

KarenMarie

Elite Member
Sep 20, 2003
14,372
6
81
Do NOT add flour!!!!

no no no!!!

the only time to use flour as a thickening agent is to use it BEFORE the soup is made. it needs to be mixed with butter or oil in the beginning and cooked for a while before adding the liquid. If the soup is already made... us equal part COLD water and corn starch.

And... at a push, if you have a box of fake mashed potatoes laying around, add it a tablespoon at a time until it is thickened.

but when thickening anything... be careful. go in small batches, a little at a time and let it simmer/bubble for a minute or two before adding more.

if you add raw flour to a cooked soup, you will definately taste it.

edit: you can add flour/butter in equal parts to liquid to thicken, but it has to be a slow cook to give the flour time to cook. it is not a good idea to add it at the end of the cooking time.
 

KarenMarie

Elite Member
Sep 20, 2003
14,372
6
81
Originally posted by: Citrix
Originally posted by: Stew
Cornstarch eh?

How much should I add?

1/4 cup Cornstarch, 1/4 water, stir and then pour into soup.

you are correct that the measures should be equal parts. but it is hard to put an exact measurement on it... like 1/4 cup... without knowing how much soup he has. 1/4 cup will not have the same effect in a gallon of soup as it would in a quart.

And the warter must be COLD while adding it to the cornstarch.

sorry... but this is finally a thread that i am confident of the topic.

;)
 

Rudee

Lifer
Apr 23, 2000
11,218
2
76
Originally posted by: Citrix
Originally posted by: Stew
Cornstarch eh?

How much should I add?

1/4 cup Cornstarch, 1/4 water, stir and then pour into soup.

Way too much. A teaspoon or tablespoon of each at most will do the job.

 

astrosfan90

Golden Member
Mar 17, 2005
1,156
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0
Originally posted by: KarenMarie
Do NOT add flour!!!!

no no no!!!

the only time to use flour as a thickening agent is to use it BEFORE the soup is made. it needs to be mixed with butter or oil in the beginning and cooked for a while before adding the liquid. If the soup is already made... us equal part COLD water and corn starch.

And... at a push, if you have a box of fake mashed potatoes laying around, add it a tablespoon at a time until it is thickened.

but when thickening anything... be careful. go in small batches, a little at a time and let it simmer/bubble for a minute or two before adding more.

if you add raw flour to a cooked soup, you will definately taste it.

edit: you can add flour/butter in equal parts to liquid to thicken, but it has to be a slow cook to give the flour time to cook. it is not a good idea to add it at the end of the cooking time.

This is called a roux.

 

DaShen

Lifer
Dec 1, 2000
10,710
1
0
Originally posted by: astrosfan90
Originally posted by: KarenMarie
Do NOT add flour!!!!

no no no!!!

the only time to use flour as a thickening agent is to use it BEFORE the soup is made. it needs to be mixed with butter or oil in the beginning and cooked for a while before adding the liquid. If the soup is already made... us equal part COLD water and corn starch.

And... at a push, if you have a box of fake mashed potatoes laying around, add it a tablespoon at a time until it is thickened.

but when thickening anything... be careful. go in small batches, a little at a time and let it simmer/bubble for a minute or two before adding more.

if you add raw flour to a cooked soup, you will definately taste it.

edit: you can add flour/butter in equal parts to liquid to thicken, but it has to be a slow cook to give the flour time to cook. it is not a good idea to add it at the end of the cooking time.

This is called a roux.

Both very true. But you can also add corn starch as a thickener after cooking. It won't add too much of a different taste.

The most traditional is to use bacon fat and render it in the pot beforehand and then slowly whisk in cream or stock, but most people use a roux now.
 

KarenMarie

Elite Member
Sep 20, 2003
14,372
6
81
roux needs to be cooked.

cornstarch does not add flavor. uncooked flour does. arrowroot is another thickening agent that does not add flavor.

 

imported_Stew

Golden Member
Apr 23, 2005
1,091
0
0
kk, I added the cornstarch , and let it stew for probably 20 minutes, stirring occasionally.

It turned out great. A nice thickness. Thx for the tips guys.

Maybe next time I'll try potatoes or something.