Where can i buy japanese steakhouse salad dressing?

They serve a creamy orange or pink colored dressingWhere can i buy japanese steakhouse salad dressing?
Not sure where you can buy it but here is a copycat recipe.
Ginger salad dressing

1/2 cup minced onion
1/2 cup peanut oil
1/3 cup rice vinegar
2 tablespoons water
2 tablespoons minced fresh ginger
2 tablespoons minced celery
2 tablespoons ketchup
4 teaspoons soy sauce
2 teaspoons sugar
2 teaspoons lemon juice
1/2 teaspoon minced garlic
1/2 teaspoon salt
1/4 teaspoon fresh ground black pepper

Directions:
1 Combine all ingredients in a blender.
2 Blend on high speed for about 30 seconds or until all of the ginger is well-pureed.