What has more calories teaspoon of mayonnaise or one slice kraft American cheese?

One teaspoon of mayonnaise has more calories than one slice of Kraft American cheese.

Here's a rough comparison:

* One teaspoon of mayonnaise: Approximately 50-60 calories

* One slice of Kraft American cheese: Approximately 40-50 calories

Keep in mind that calorie content can vary slightly depending on the specific brand and type of mayonnaise and cheese.