I have made pudding with corn starch and cooked it on the stovetop, but I am wondering about the possibility of making my own instant pudding as a food prep for something different that might have an extended shelf life. After reading the ingredients listed below, this might last forever, with all the artifical stuff in it. Have you ever made or had instant pudding? The first ingredient is modified corn starch. I have wondered about getting some of this for my preps, but my guess is that it is only available to the food industry. And the tetrasodium prophosphate for thickening? Any idea about where this comes from ? This is the list of ingredients on a box of sugar free-fat free chocolate pudding: Modified cornstarch cocoa processed with alkali maltodextrin Tetrasodium prophosphate for thickening contains less than 2% of natural and artifical flavor, salt, soy lecithin, calcium sulfate, xanthum gum, mono and diglycerides (prevent foaming, aspartime and acesulfame potassium (sweeteners) red 40, yellow 5, blue 2, artifical color, BHA (preservative).