Sad to say, I have never seen or heard of it, and I live in the US
I see it is carried in the Kroger supermarkets, which is where we shop most of the time. Since I hadn't heard of it, I tried a web search and found this DFS Substitute recipe:
SAUCE RECIPE FOR SANDWICHES
Durkee Famous Sandwich and Salad Sauce Substitute
Try this inexpensive to make sandwich spread recipe on subs, burgers, turkey and ALL sandwiches.
* No it's not Durkee but it's good!
Ingredients
½ teaspoon onion powder (McCormick Brand)
½ teaspoon salt
1 teaspoon sugar
1 tablespoon Dijon Mustard (Kroger Brand)
1 cup Best Buy Real Mayonnaise (Kroger Brand)
3 tablespoon plain yogurt
2 tablespoon juice from a dill pickle jar (Vlasic Brand)
Method
Mix all ingredients as listed until smooth. Chill in refrigerator, in a covered container for several hours or overnight. Stir lightly before using.Here is another:
Exported from MasterCook *
Durkee’s Famous Sauce (Copycat)
Recipe By :
Serving Size : 16 Preparation Time :0:00
Categories : Sauces Cheese/Eggs
Amount Measure Ingredient -- Preparation Method
-------- ------------ --------------------------------
-----WALDINE VAN GEFFEN VGHC42A-----
1/2 cup Cold water
4 tablespoons Cornstarch
1/2 cup Plus 2 TB dark vinegar
2 tablespoons Salt
1/2 cup Sugar
1 Whole egg
4 tablespoons French’s prepared mustard
4 tablespoons Margarine -- tiny bits
Place all ingredients as listed in blender on high speed until smooth (2
minutes). Transfer to top of double boiler and cook over gently boiling
water, stirring often for 12 to 15 minutes or until thickened and smooth.
Once more put mixture back through blender 30 seconds or till smooth,
using high speed. Refrigerate in covered container 24 hours before using.
Keep refrigerated 3 months. Source: Gloria Pitzers' Make Alike Recipes.Sometimes copycat recipes are better than the store-bought ones. Like Bisquick -- we have a copycat that produces much fluffier pancakes and biscuits.