Combine salad dressing mix, beer, mustard, vinegar and olive oil in a jar or container with a lid. Shake vigorously; set aside.
Bring a medium pot of water to a boil. Add salt and 12 ounces cleaned green beans and blanch for 3 minutes. Strain and cool in an ice bath.
Combine potatoes, green beans, tomatoes, and bacon. Toss with dressing and serve.
Recipe courtesy of Sandra Lee, 2007