It is a gel. It looks like a thick slurry that has sit around for 10 minutes. You would add it at the end instead of of the solid butter. It will thicken slightly but it will extend the sauce. Look at it like an extender. Basically the calories of the sauce will be the same, but you need to use less sauce. If you need 1 cup of sauce for your pasta than make 3/4 of a cup and add 1/4 cup of Ztrim. Then you will have the 1 cup of sauce you need but 25% less calories, fat, sodium, etc. The texture and flavor will be remarkably close.