https://www.budget101.com/recipes/4521-mcdonalds-sweet-and-sour-sauce-recipe/

Note this same recipe was posted on threads, jordan_the_stallion8 (Jordan Howlett) shared the following recipe

McDonald’s Sweet and Sour Sauce

1/4 cup apricot preserve

1/4 cup peach preserve

2 Tbsp corn syrup

5 tsp white vinegar

1/2 tsp soy sauce

1/2 tsp mustard (note that tsp was autocorrected to two; it said 1/2 two mustard)

1/4 tsp salt (note that tsp was autocorrected to tap; it said 1/4 tap salt)

1/8 tsp garlic

1 1/2 tsp corn starch

Put in sauce pan and add 2 Tbsp of water and let simmer for 5 minutes