I am attempting to bulk prep some frozen convenience food and have determined that a standard Pyrex glass container would be ideal for freezing (non-liquid) meals (think burritos or tacos), but I want to ensure it is safe to induce a huge temperature swing, or if there is a better way to do this.
Is it safe to microwave Pyrex containers immediately after removing them from the freezer and removing the plastic lid
convenience-foodscookwarefood-safetyfreezing
Best Answer
It not huge, it's just the difference from freezer to room temperature you are worrying about
E.g. -20°C to 20°C, is A 40°C shift. The shift was going to be 20°C to 100+°C anyway. There is no physical reasons why this would be anymore stressful
From room temperature you are raising it 80°C, from frozen you are raising it 120°C. Not a problem in the normal temperature range for glass
The freezing temperature of water (most common item in food) has no relation to the freezing temperature of glass etc
Pyrex and other glasses can be damaged if one part of them is instantly heated or cooled by a 100°C or so