the chemicals in the non-stick sprays break down the plastic. I use Ziploc bags also. If you want to keep it from sticking just rub a little olive oil around the container. But if you're going to put different sauces in a plastic container just let it set out for a short time so it will loosen from the sides. I quit along time ago putting plastic/Tupperware/Rubbermaid containers in the microwave. Even if they are microwave safe. I just put them into a glass (Pyrex) to microwave.
Originally Posted by
ejmhome2
I think I read to spray your container with Pam type sprays before putting your tomato products in to prevent the red from staining. Worth a try since most of us use non stick sprays.