Grimm, I agree with animus, their is something else in there besides english toffee.
I know when I tried to replicate it with Ecopure krystal and loranns english toffee it needed something else. I tried a loranns caramel + english toffee mix, it wasnt it, still not the same. Animus suggestion of butterscotch, has me thinking. I got that here to, I should get to experimenting.
It's actually Rich that they use for ET.