I don't doubt it, both english mustard and horseradish are hella hot (and good), but for me Hungary takes the lead. They love hot paprika and use it in almost every dish, It's a shame its cuisine is almost unknown in western Europe.
I mean, I'm joking about that part, we're stereotyped as having bland food. I love all sorts of spicy foods, but we're also a country that devours Gregg's and Nando's. However, we definitely actually are the Europeans who are referring to Sprite and Sprite-adjacent drinks when we say "lemonade". Unfortunately.
Somehow over time lemonade became to mean the same as soda here in Belgium. Probably through being introduced to American lemonade and Soda at the same time.
Most carbonated fruit drinks are called lemonade. Coka Cola is called just Cola. Sprite, Fanta and similar drinks are all lemonades here.