The only differences: Double Stack: two 2-ounce patties, one slice American cheese, plain bun. Dave's Single: one 4-ounce patty, two slices American cheese, lettuce and tomato, wider bun.

I'm gonna grab another piece of cheese. Right here on the bottom bun stack our meat on top. All right now this is the most important part we're going to grab our mayo.

September 2, 2008 at 12:00 p.m. Wendy's has launched a Double Stack cheeseburger for 99 cents nationwide. The Ohio-based fast food chain is already positioning the burger as a major rival to McDonald's $1 Double Cheeseburger.

Made with Wendy's signature fresh, never-frozen beef, the Double Stack is served on a warm bun and topped with a slice of American cheese, crunchy crinkle-cut dill pickles, fresh white onions, ketchup and mustard.

Dave's Single consists of a quarter-pound beef patty, two slices of American cheese, lettuce, tomato, pickle, ketchup, mayo, and onion on a toasted premium bun, while a Jr. Bacon Cheeseburger features a junior hamburger patty, a slice of American cheese, two pieces of bacon, mayo, lettuce, and tomato on a toasted bun.

They are not the same the son of a baconator is the same as a single baconator. It has two pieces of small meat three pieces of bacon cheese and ketchup and mayo. The double baconator has 6 pieces of bacon cheese mayo ketchup and two pieces of big meat.

Here's the Double Stack breakdown: two 2-ounce beef patties, one slice of American cheese, crinkle-cut pickles, fresh red onion, ketchup and mustard on a standard-issue burger bun. Total calories: 390. Fat grams: 21.

In-N-Out's Double-Double Animal-Style Burger has 2 beef patties fried in mustard, caramelized onions, cheese, and special mayo-ketchup sauce in addition to all the fixings of a regular burger.

This serving contains 24 g of fat, 27 g of protein and 22 g of carbohydrate. The latter is 5.7 g sugar and g of dietary fiber, the rest is complex carbohydrate. WENDY'S, with cheese, Double Stack contains 10 g of saturated fat and mg of cholesterol per serving.

Here's the Double Stack breakdown: two 2-ounce beef patties, one slice of American cheese, crinkle-cut pickles, fresh red onion, ketchup and mustard on a standard-issue burger bun. Total calories: 390. Fat grams: 21.

The bacon Double Stack has ketchup, mustard, pickle, and onion. The Baconator has ketchup and mayo.

A half-pound* of fresh British beef, American cheese, crisp lettuce, tomato, pickle, Heinz ketchup, Heinz mayo, and onion on a toasted bun. More meat means more to love.