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Whenever I cook oatmeal (whether steel cut oats in a rice cooker or pan, or rolled oats in the microwave), it always overflows. How do you prevent this?

Do you just use a bigger container? Do you just take the pan off the heat or bowl off the microwave when it's about to overflow? I've also heard that if you put dried fruit or something like that along with the oatmeal while cooking, that helps prevent it from overflowing -- is this true?

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Do you use water or milk? –  ElendilTheTall Oct 22 '11 at 19:32

2 Answers 2

A bigger container is definitely the 'instant' solution.

I've never hear of fruit preventing overflow. I'd guess the theory there is that it has something to do with the fruit interfering with the bubble to prevent them from forming...but I'd doubt it without A LOT of fruit.

Generally I've done two methods:

  • Reduce the power and increase the cooking time. Cut the power by 30% or so and increase the cooking time, this seems to prevent as much of a rapid boil and alleviates the problem.

  • Determine the time right before it starts to boil over, cut power off, cover it tightly and just let coast the rest of the way. This is particularly effective if you're cooking in a vessel with good thermal retention.

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I have a cheap digital thermometer that I put into liquids. When it reaches 95ºC it'll beep. I have no idea at what temp the oat will overflow. –  BaffledCook Oct 22 '11 at 21:50
@BaffledCook good call! –  rfusca Oct 22 '11 at 21:51

What liquid are you cooking your oatmeal in? I ask this because when i first started eating oatmeal i was using milk and the microwave and i was having the same exact problem. Recently, i started just cooking the oatmeal in water and haven't had that problem since. I use a flavored oatmeal (i recommend the Maple and Brown Sugar weight control from Hy-Vee!!!) and it tastes just as good to me whether i cook it with milk or water.

rfusca is right about the larger container being an instant solution. I also have a theory about the type of container you use. I'll spare the details but at first, i was using a plastic bowl, overflow like clockwork, i switched to a porcelain bowl since, no overflow. It seems to cook better in the porcelain also. Haven't tried glass yet.

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