I would have been delighted with this double boiler insert (despite the groove noted by previous reviewers) if it had performed as expected. I own three All-Clad LTD pots I should have been able to use it with : 3 quart, 4 quart and 5 quart. The insert doesn't fit the pots precisely or snugly; it slips and tips when set onto the pots. Obviously, this makes it unsafe as well as unusable. Since I agree with some reviewers that the qualty is inferior to All-Clad products produced in the USA, I guess it may be that the items produced in China are not really a good match with the original items produced before recent globalization of the company. Maybe I just got a bad one, but a previous reviewer mentioned the same problem. For an item of that price from a company with the reputation of All-Clad, this is inexcusable.

Very pleased with our double boiler insert. We have a lot of All-Clad pots and pans and have always found them to be of the best quality. The insert is up to standard.

It fits many of our pots perfectly and is very useable.

Hollandaise will never have to burn while using this.

Extremely well made, heats evenly and slowly, and fits my 3 qt pot with a precise seal. I've even used it directly on the burner when I was cooking multiple courses. Love it!

Someone else pointed out that the quality of this double-boiler is not the same as the pans, and I agree with their assessment. The quality of this product is not consistent with the quality of other All-Clad products.

I have to admit -- I bought this insert simply because I love all things All-Clad. While it heats well, the indentation on the inside is a problem. I love it becuase it allows the insert to fit snugly, but I hated working with it until I got one of those small silicone spatulas. It fits perfectly in the indentation and it's the same one I use with my food processor. I made cheese dip over for the Super Bowl and I was impressed with the insert's performance.

I see that All Clad now has a ceramic double boiler insert. I must live in a test market because I've only seen it at one store and it's not even on the store's or All Clad's website. I forget the cost but, you're buying the insert and the 2 qt saucepan as a set. The insert is removable. I like this original insert better, even with the indentation, because it's bigger.