If you're only worried about calorie counting (the method discussed in the article) most restaurants are going to have dishes for which you can fairly accuratel

If you're only worried about calorie counting (the method discussed in the article) most restaurants are going to have dishes for which you can fairly accurately estimate the calories (with some experience). Tricks like ordering dressing/sauce on the side can make it easier. Fat has the highest calorie density of any ingredient with 9 calories per gram (sugar has 4). If you're really unsure, you can use that as an upper limit.