by Frank Deis » Fri Dec 07, 2007 4:08 pm
Well, as a biochemist I can tell you that lecithin is about 2/3 the same as a typical fat or oil. Fats and oils are both triglycerides, meaning the small glycerol molecule hooked onto 3 long chain fatty acids.
TO convert this into Lecithin, you unhook the 3rd fatty acid and replace it with phosphate and then add choline as a head group. Lecithin is found in all sorts of products from house paint and cosmetics to candy bars. It is indeed an emulsifier which makes it kind of like a detergent or soap.
The word "granules" bothers me. If this stuff is in solid form, how is it going to replace the fat in your dish? Fat content is often about texture and flavor and if you have "granules" I imagine your lecithin has been treated in some way, made into a salt perhaps. I doubt it would really work in cooking.
Frank