For those of you who can't get Sabrett's onions for your dogs at home, or want a tastier version of the sauce, here's my recipe that I've been making since I was a teen.
Foresters Spicy Hot Dog Onion Sauce
This is a spicy version of the sauce. You can leave out some or all of the hot sauce if you like it milder, or add more for some real heat
1 large yellow or sweet onion, sliced and chopped
4 tbs of Heinz Ketchup or tomato sauce
1/4 cup of water
1-2 tbs of sugar
1 teaspoon to 1 tablespoon of Sriracha sauce or chili garlic paste. I like the brand with the green rooster logo best.
2 tbs of vinegar
1/4 tsp of Worchestershire sauce
1/4 tsp of salt
1/4 tsp of black pepper
1/4 tsp of oregano
Place all ingredients in a saucepan, bring to a boil and lower to a simmer and reduce until a medium thick sauce. Remove from heat and let cool. The sauce will thicken more as it cools. Serve warm on hot dogs. You can keep it in the fridge for a week.
Here's a gallery of photos of making the sauce.