Adding foods that are not listed?

Is there a way to add foods that are not listed?

For Instance, instead of drinking Slimfast, I'm drinking the generic "Equate Ultra Weight Loss Shake" but I cannot find it at all.

In your food log there is an option to "Add it here".  You can add an item and it will save it as a tagged item.  You need to have the nutrition label in front of you.

yup