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White foam when boiling potatoes?

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what is that?

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I would say starch from the potatoes.
Report (0) (0) | earlier
Meat does that too! It raises out the impurities. I imagine potato foam has some starch in it's not but not all starch.You can avoid most of the foam when cooking, just don't let it come to a complete boil, just a simmer. But I think it is good to make foam so you can skim it off and discard it. Kinda like purging the food of impurities.

If you notice just about anything you boil is going to have the foam. Eggs, meat, any vegetable, random items like jars, baby bottles, sometimes just boiling water. I think that is just film or residue from the pan or something. Also the rivers with fast running water will have foam, that can not be starch.....
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starch from the potatoes its fine.
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It's the starch
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starch. potatoes & pasta contain a lot of starch
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it's the potatoes Starch my friend going out while boiling
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It is the starch from the potatoes!

Notice if you boil pasta you will get the same stuff!

Not as much as the potatoes but there is some!
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Starch!
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It's probably just because you have the heat on too high, that's it. Just turn down the heat a little bit, and the foam will go away in about a minute. That happens to just about ANYTHING when boiled at a really high temperature. It happens because water can't go past 212 degrees Farenheight and 100 degrees Celcius before it turns to a gas state, so the higher that you are trying to make the water go will only make it foam and steam more.

Hope this helps!
Report (1) (0) | earlier
Its the starch released when the potatoes are cooked.

If it bothers you, just skim it off. It doesn't effect the taste.
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A little trick I learned to prevent that: put a dab of margarine or butter in the pot, no more foam!
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HAHA THIS MAKES ME LAUGH CAUSE IT HAPPENS TO ME ALL THE TIME AND I CANT COOK FOR MY LIFE HAHA.

THE LAST TIME I BOILED SOMETHING I LEFT IT THERE AND CAME BACK AND THERE WAS FOAM EVERYWHERE,I CALLED MY FRIEND AND SHE SAID THE POT WAS TO HOT FOR WHAT WAS IN IT HAAHAA[=
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