They contain double the amount of fat when the trans fat is taken into account. Ditto for the fish sticks, which tout just three grams of saturated fat per serving but actually pack another five grams of hidden trans fat. Same goes for some of the most popular brands of baked crackers, which boast just one gram of saturated fat on their labels but contain an extra two grams of trans fat. It has seven grams of saturated fat in the crust, but contains another seven grams of trans fat per serving. In the dairy case, there's more confusion between butter and margarine.
Butter contains no trans fatty acids.
Each tablespoon of butter still has seven grams of saturated fat or roughly a third of the recommended daily intake. Many margarines particularly stick margarines are low in saturated fat, providing just two to three grams per tablespoon, but they come loaded with trans fat, sometimes as much as three additional grams per tablespoon. Stick margarines are almost as bad as butter, but the tub margarines are much better and the lower-fat tub margarines are much, much better. Until a final rule is made, however, consumers can only guess how much trans fat most foods contain. The easiest way to check is usually to read the ingredient list.