Piousbox

Creamy A.1.-style steak sauce

• 1 egg yolk
• 1/2 cup neutral oil
• 2 tbsp Worcestershire sauce
• 1 tbsp ketchup
• 1 tbsp Dijon mustard
• 1 tbsp apple cider vinegar
• 1 tsp soy sauce
• 1 tsp garlic powder
• 1/2 tsp onion powder
• 1/2 tsp black pepper
• 1/2 tsp smoked paprika
• 1/2 tsp sugar or brown sugar
• 1–2 tsp prepared horseradish
• 1 tbsp finely minced shallot or onion
• 1–2 tbsp water, as needed
• Salt to taste

Make it

1. Whisk the egg yolk, Worcestershire, mustard, vinegar, ketchup, and soy sauce.
2. Slowly drizzle in the oil while whisking continuously, making a mayonnaise-like emulsion.
3. Mix in the garlic, onion, pepper, paprika, sugar, horseradish, and minced onion.
4. Add water a teaspoon at a time until it's the consistency you want.
5. Refrigerate for at least 30 minutes so the flavors come together.

For something much closer to actual A.1., I'd reduce the mayo/egg component and add tomato paste, vinegar, Worcestershire, raisin/molasses-like sweetness, and spices. The classic A.1. flavor is more sharp, sweet, fruity, and acidic than a mayonnaise-based steak sauce.