It’s not a double double, but used the secret sauce. [https://www.seriouseats.com/in-n-outs-double-double-animal-style-burger-recipe](https://www.seriouseats.com/in-n-outs-double-double-animal-style-burger-recipe)
https://preview.redd.it/kjr97x505hic1.jpg?width=3024&format=pjpg&auto=webp&s=d2d5a412d0f0269497d869d96128e74873ae6c09
by theonepoofei