I thought this would be great. I would make a new batch of cookies every week, trying all sorts of different recipes. So far I've tried two, and things have not gone well on either occasion. I am not a bad cook, and I know how to follow recipes accurately. I have a good set of kitchen scales that weigh to within 5g, and I am careful when I cook. Nevertheless, these recipes seemed to have failure built in.
First, the chocolate and orange sandwich cookies, on page 129: in the picture they look wonderful. I had terrible trouble making the paste, which was sticky and hard to handle. I suspect the ratio of dry to wet ingredients was wrong. Maybe I used eggs that were too large. As it was I persevered. The recipes says to bake for 10 -- 25 minutes. I took them out after about 18 minutes, which it turned out later (after they had cooled) was not long enough. However, the recipe doesn't say how to tell when they're done, so how could I know? Furthermore, again following the recipe, my orange cream filling ended up far too wet to use comfortably. Overall, the taste was great, but the cookies were a deep disappointment.
Second, snicker doodles, page 24. The recipe claims to make 2 dozen biscuits. It tells you to place the paste balls 2 inches apart, implying that the resulting biscuits will have a 2 inch diameter. Rubbish! Mine all ran together into one large mass. I estimate that that quantity of paste would make at least 3 dozen biscuits, if not more. Worse, it was impossible to scrape them off the baking tray because there was no instruction to grease it. Other recipes don't omit that instruction when it is needed, so I naturally assumed that it wasn't necessary. I still haven't removed the baked-on mess. Once again, the taste is great but the experience is a huge disappointment.
I have given up with this book, and I advise you to do so too.