As of yesterday, Burger King has joined the low-carb field. The number two burger chain now offers a low-carb version of both its original and chicken Whoppers—served in plastic bowl, sans bun. In addition, diners can substitute salads for French fries and bottled water for soda in combo meals.

Also in the pipeline, according to the Associated Press, are salads topped with steak, chicken, and shrimp. The chicken and shrimp versions are expected to appear on menus in February and March, the steak salad in late spring.

According to reports, Burger King also is debuting a Web site, www.haveityourway.com, that shows how many carbohydrates, calories, and fat each meal component contains.