In-N-Out has a secret menu that is not so secret anymore!
This video from Food Beast shows how many options there are:
Like a Double Cheeseburger, this 3×3 has 3 beef patties and 3 slices of cheese with your choice of onion or no onion.
Animal Fries is a french fries side order with everything on it! There’s chili meat, cheese, and thousand island dressing on it. It’s messy and best eaten with a fork!
The Neapolitan Shake has all three milkshake flavors-chocolate, strawberry, and vanilla. This shake is a sweet treat with the strawberry included, just like a real Neapolitan ice cream!