I was hoping that the Impossible Whopper would at least reduce that post-fast-food "brick in the stomach" sensation, seeing as I was eating a plant-based patty instead of meat. Alas, this wasn't the case.
To be fair, the fries almost certainly have a large role in the post-fast-food feeling, and I ate every last fry (Burger King fries are among my favorite, which is surely a divisive opinion).
Read more: I tried fries from 8 major fast-food chains, and one far outshone the rest
For the calorie counters out there, the Impossible Whopper's 630 calories is only 30 less than the regular Whopper's 660 calorie count.
Otherwise, I can see the Impossible Whopper being a great option for vegetarians who want a vegetarian fast-food option once in a while, or if you just want a burger experience when you want to reduce the amount of meat you eat. I have this marketing image in my head of a group of friends going to Burger King, and the vegetarian members of the group being happy they can get a burger, just like their carnivorous friends.
With that said, I should note that the Impossible Foods patty in the Impossible Whopper is usually cooked on the same broilers as the beef patties. If you truly don't want any trace of meat on your Impossible Whopper, you can ask for the burger to be cooked on different broilers, according to Burger King.
I'm glad I tried the Impossible Whopper, and I might get it every few visits to Burger King. If anything, reducing the amount of meat in my diet can only be a good thing.