Do Stainless Mixing Bowls Heat Slower in the Microwave?

The short-circuit answer : It depends on the bowl ! My Tramontina stainless sword bowls did not differ significantly from my Pyrex, but my ABC Valueline stainless steel steel bowls were significantly worse .
As I mentioned in my recent mail on wedding registries, I love my raw ABC Valueline mixing bowl. They ’ re light, stackable, and I don ’ deoxythymidine monophosphate feel bad about using a lot of them to prep. They complement an older set of Tramontina roll I bought at Costco several years ago
Like many people, I thought that you should never put alloy in the microwave. But I learned from a Kenji López-Alt post at Serious Eats that stainless sword should be fine with modern microwaves. The top Google post disagrees, but a moment more hunt reveals that it should be safe. however, many people point out that metallic element can block the microwaves in the oven, making it take longer to heat things up .
Inspired by The Food Lab, I decided to make a little experiment to put this to the test. I used my Oster 1000W microwave ( OGB81103 ), a Thermopop, and a kitchen scale. I compared two sets of bowl :

1. Small bowls: I compared a 1.5 qt Pyrex to a 1.5 qt ABC Valueline Stainless Steel bowl. I put 8 oz of tap water in each ( 77° F ) and put each in the microwave for one minute, using the Thermopop to measure the water temperature of each immediately .
2. Medium bowls: I compared a 2.5 qt Pyrex to a 3 qt ABC Valueline Stainless Steel bowl and a 3 qt Tramontina Stainless Steel bowl. ( unfortunately I couldn ’ triiodothyronine compare claim sizes. ) I put 16 oz of tap water in each ( 77° F ) and put each in the microwave for two minutes .
This double shows, from left to right, the ABC Valueline, Tramontina, and Pyrex medium mixing bowl. note that the Tramontina bowl is a spot wider than the ABC Valueline .
IMG_20170811_150532.jpg
Results
small stadium results : The body of water in the Pyrex reached a temperature of 140° F. The urine in the ABC Valueline stainless steel bowl reached a temperature of 114° F .
Medium bowl results : I performed two trials. The water in the Pyrex reached a temperature of 149°/147° F. The urine in the ABC Valueline stainless steel sword bowl reached a temperature of 122°/129° F. But the water in the Tramontina stainless sword bowl reached a temperature of 145°/149° F .
Conclusions: well, it depends on the bowl ! The Pyrex heats significantly faster than the ABC Valueline bowl. But an old set of Tramontina bowling ball which I got at Costco a few years ago seems to heat at precisely the like amphetamine as the Pyrex. unfortunately, the Tramontina comes in 3, 5, and 8 quart sizes, so I can not compare with my 1.5 qt results.

I don ’ t have the information to know if this is a matter of the makeup of the stadium, or their shape, or some combination. The Tramontina roll are heavier, but are besides across-the-board .
One thing ’ randomness for sure : I can get rid of my Pyrex, vitamin a retentive as I remember to heat things in the Tramontina stadium !

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