Yes Dots that make sense. I remember my mom cooking with one too.There was a valve at the top that released steam.

One of my magazines (Cooking Light) had a big article about them in this month's issue, and I've been thinking about buying one for a while.............

I posted the same question on my Facebook page and got several responses. It seems that people either don't know how to use one, or they use it and love it. Hmmmm might be time to head to my local Bed Bath & Beyond with my 20% off coupon and look at them............I need to check out the different types and all. I looked online, but I just can't tell much unless I can really see it, you know??
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Ann