My local Burger King offers them for $2.99. There's also a regular Whopper version for $4.49.
With both a spread and an aioli, avocado is the main feature here. The avocado aioli tasted like a creamy Italian salad dressing especially on the lettuce. It had a tangy zing to it. The spread was a decent guacamole, but lacked some of the richer buttery notes of the fruit.
The Swiss cheese packed a nice creamy flavor when I pulled off a piece to taste, but got mostly lost inside the burger.
A good amount of bacon added a strong smokiness, but wasn't quite crispy or crunchy. The burger patty had a nice bit of flavor and a slight bit of char which is nice (especially since this is the same Burger King location where I got the driest burger patty ever). I would have liked a thicker patty to showcase the beef though.
Nutritional Info - Burger King Avocado Swiss Whopper Jr. (175g)
Calories - 430 (from Fat - 210)
Fat - 23g (Saturated Fat - 8g)
Sodium - 900mg
Carbs - 33g (Sugar - 6g)
Protein - 21g