CopyKat.com is the creation of Stephanie Manley. Stephanie started publishing recipes on the web in 1995 as a means to capture her family recipes in a format that they would not be thrown away.
Over the years 
McDonald’s Secret Sauce isn’t a secret anymore. The McDonald’s secret sauce is easy to make, and can be made in a couple of minutes. Although the McDonald’s Secret Sauce goes well on a Big Mac, it also goes well on a sandwich. India relish can be found at your local grocery store. India relish is a type of pickle relish, just like there is dill relish.
McDonald’s Secret Sauce
1 C. Mayonnaise
2 Tbsp. Indian Relish Drained
1/2 tsp. Granulated Sugar
2 Tbsp. Thousand Island Dressing
Mix all ingredients well. Let stand for at least 20 minutes, allowing to sit overnight is desired.
this is the best ever