My standard Victoria sponge recipe is 4, 4, 4, 4, janea. Four ounces each of butter, sugar, flour and egg. Four oz of sugar divided by 8 is half an ounce. Add a smear of jam and smear of icing.
The point, as you say, is portion size. I thought I had gathered from other posts of yours (perhaps some time ago now) that you were trying to avoid added sugar in your diet altogether, so I was a bit surprised that you would even look at Starbucks cakes ?
My approach is this: when I want a Starbucks coffee and a Starbucks cake, that's what I have. I don't find that I care about sugar content. Worry free treats are allowed in my life. This approach seems to have been harmless so far.
I think the main thing about the adding calorific content to menu items in eat-out-eries is that it won't make a blind bit of difference to the people it aims to make a difference to which, in my view, means it's probably going to be another glorious waste of time, energy and expence.
Wes Streeting announces we have 1,000 days to prepare for war.
New series of *This city is ours* on iPlayer now


