Jack in the Box has/had a “secret sauce” that used to come on regular hamburgers and cheeseburgers (and the Bonus Jack, when they have it) but is now only available by request. It’s a mix of ketchup, mayo, mustard, A1, Worcestershire, and hot sauce.
Del Taco, which coincidentally enough is now owned by Jack, also has a “secret sauce” which is basically just ranch dressing without the buttermilk.
Arby’s sauce is hands-down the winner for me. No question. Arby’s Three Pepper sauce is good too.
Okay, I normally hate it when folks come into a thread with some barely-relevant bullshit just to hear their own voices, so if that’s what I’m doing, I apologize in advance. But it sounds like you’re really looking to up your homemade sandwich game, so I’m gonna advise some barely-relevant bullshit that might relate to what you really want:
Sriracha and mayonnaise. Put a glob of mayo in a little bowl, then squirt as much Sriracha as you want into it. Slather liberally on the bread.
It’s a delightful sandwich sauce, super easy. Maybe Subway has it, so it’s not off-topic? I dunno, it’s just good.
That’s awesome thanks.
My OP was different than what I really wanted to know because no one would contribute to that thread.
But this is better, will try it.
I do like Chick-fil-a sauce but I think the sauce on Popeye’s spicy chicken sandwich is superior.