The British like a condiment called Salad Cream. It is somewhat similar to mayo, but the proportions of oil and vinegar are flipped; mayo has a lot of oil and some vinegar, where salad cream has a lot of vinegar and some oil.
That sounds like an interesting mayo alternative, as I like the tanginess of vinegar. I wouldn’t use it on a typical tossed salad, but might on sandwiches or in something like coleslaw.
I too did not know of “flat whites” prior to Nick’s post. And I held out longer than most people before I became a cannot-function-without-my-daily-coffee kind of person. I didn’t even drink coffee at all until grad school which I started a month before my 26th birthday. Then didn’t drink it at all for 5 years after grad school until I attempted FSA exams.
But alas, I am now a daily coffee drinker and get such a bad headache if I skip a day that I don’t ever skip a day anymore. I blame the SOA.