It changed people's perception of food. They might've thought spices were too strong.

40s and 50s food was simple to make and high in calories, like you're trying to survive in a zombie apocalypse or something. My grandparents didn't experience a lot of the post-war optimism a lot of the world seemed to have because Britain got fucked in a properly long-term way. Being an island that fought to the very end left it in a fairly unique position.

Small history rant over.