I came across yesterday about everyone's favorite "I can't believe this has so few calories" foods.
So to flip the question, what food was a staple for you that you were surprised to find had a lot of calories?
I always knew fattier cuts of meat had more calories but until I started training and focusing on my diet, I was shocked at how big the difference is! Switching from 70/30 or 85/15 to 90/10 or 93/7 beef has done wonders for giving me a lot of food volume with a much smaller calorie hit.
Another one that was a little surprising once I actually measured out the portion was peanut butter. I always knew it was calorically dense but until you take out a tablespoon and see how pathetic the portion is compared to what you normally eat, the density of calories just doesn't hit.