If you've ever wondered how many calories are in an enchilada from your favorite restaurant, Congress may have an answer for you. A new bill could require fast food and restaurant chains to list nutrition information on menus.

It's an effort to fight obesity. Two out of every three Americans are overweight or obese according to the U.S. Centers for Disease Control and Prevention.

Chains like McDonald's and Wendy's already give nutrition facts. the bill would only apply to those chains with at least 20 locations.

While the fast food industry waits to hear from Congress on the new bill, one Austin burger joint is already serving up a healthier patty.

Hut's Hamburgers has a new patty: Longhorn beef. They can't flip them out fast enough, but before they hit the plates at Hut's, they're at Don and Debbie Davis's longhorn ranch.

Don said the cattle are a cinch to raise because they're adaptable.

"I've heard people claim they'll eat rocks. I'm sure they don't, but I've been in extremely marginally country where these cattle will raise a calf every year," Don said.

One difference between these longhorn cattle and other cows is they eat grass their entire lives. Don said that makes a difference on your plate.

"When you grass-finish rather than grain-finish a product, you have a much healthier beef profile. Lower fat, lower cholesterol," Don said.

These majestic animals have roamed the plains of Texas for about 500 years.

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	Longhorn burgers Hut's Hamburgers is offering longhorn meat as an option.

"Those are the cattle that were rounded up and driven up the trails in the late 1800s after the civil war," Don said.

So when the work the Davises do on their ranch ends up at Hut's, you're biting into history, with about half the fat.

In the 1920s the Texas longhorn almost became extinct and there was a push to preserve them, now most longhorns are raised as a hobby. The Davises hope this changes as people realize their commercial value. They said this will also help preserve the longhorn.