Start with emulsion blender touching the bottom of the container. The Catalina dressing gives it such a wonderful tang. Put all ingredients into emulsion blender container. HOW TO MAKE HOMEMADE CATALINA DRESSING: Combine vegetable oil, vinegar, worcestershire sauce, and ketchup in a jar with a lid or a bottle with a cap; close the jar/bottle with a lid/cap and shake it up until well combined. Catalina dressing is a tomato-based salad dressing. At least put it in the marinade the morning before you grill it. Instructions. Catalina dressing somewhat resembles French salad dressing, except that it is darker. Blend for about 30 seconds until mixture begins to emulsify. Catalina Dressing is great to have in the pantry. The longer you let the London Broil marinate, the better. French dressing is typically light orange, but Catalina is usually reddish-orange. It has a slightly sweeter taste than French dressing does, and … It can be used to make Crock Pot Catalina Chicken or Dorito Taco salad. You could use French dressing instead.