Restaurant House Dressing

3/4 cup olive oil
1 cup vinegar
2 teaspoons garlic powder
2 teaspoons oregano
2 teaspoons basil
1.5 teaspoons pepper
1.5 teaspoons salt
1.5 teaspoons onion powder
1.5 teaspoons mustard powder

Shake it up and let the flavors blend overnight.
This must be refrigerated.