1 c. sour cream
1 c. mayo
1 (1 oz.) pkg. Ranch dressing mix
1 lb. ground chuck
1 (1 1/8 oz.) pkg. taco seasoning mix
1 c. water
1 head iceberg lettuce (bite size)
2 lg. tomatoes, wedges
1 1/2 c. shredded cheddar
1 c. sliced celery
4 1/2 oz. crushed tortilla chips
1/2 c. sliced olives

Combine first 3 ingredients and mix well. Refrigerate at least 1/2 hour. Cook hamburger in large skillet. Drain fat. Stir in taco mix and water. Cook until boiling. Reduce heat to low. Simmer 15 minutes. Remove from heat. Arrange lettuce, celery, tomato, cheese, tortilla chips and olives in large salad bowl. Add meat mixture just before serving and mix well. Serve with chilled dressing.