I like to make a quick cheese omelet in the microwave, in a bowl (no pans to clean up). I had the technique working well, but one day switched from shredded cheese to some Velveeta. The amount of cheese was comparable, but the omelet boiled or frothed up and overflowed the bowl (by a lot).   It does not matter whether I cube the Velveeta and mix in well, or just lay it on top in slices. In the latter case I've also tried adding the slices at the end (the last minute, on 50% power), and it still froths up. The eggs themselves to that point were bubbly but contained. Once the cheese gets hot it takes about 10 seconds to make it froth, after a 15 second cool-down period, so just stopping the microwave and stirring would add several minutes as well as requiring lots of intervention from me, which kind of defeats the purpose of fast and easy.  I like the taste of Velveeta in the omelet, but am tired of dealing with the mess. (Putting a plate under the bowl now gives me something else to clean, plus I want to eat the cheese, not wash it down the drain. Using an over-sized bowl also worked--though I still had to stop & stir a time or two--but I only have one of those so what do I do until it's time to run the dishwasher again?)  Does anyone know why this happens, and/or what I can do about it? 
Rose petals are edible.  If you look for rose petal recipes, you will find many creative uses of them, including rice pudding with roses - so your pudding intuition was correct.  During colonial American times they were considered a treat.  You can candy rose petals with egg whites and sugar - typical cautions about appropriate raw egg white useage applies.  Before using your rose petals in culinary applications, make sure to remember what chemicals you used on them.  If they've been sprayed with pesticides, you don't want to be eating them. 