I think Red Leicester is just cheddar coloured with annatto too, but given it's orange, it's betterer and I eat lots of it. Apropos of nothing, I have a huge block of annatto in the spice cupboard, another victim of my not checking the size when ordering things on the internet, see also my 5kg bag of monosodium glutamate. It does encourage me to make a lot of pollo pibil which is no bad thing.
Toasted sandwiches, they were a very student thing, till our toasting machine reached the point where it was so claggy with exuded substance, we thought, erm, no*. I caught the pet nurse once trying to chisel off the worst of it with a chopstick. She once made toasted sandwiches with pot noodle filling. We didn't let her in the kitchen very often.
*we probably should have buried it, like I once did an irradiated thermocycler. Hopefully, the NRC statute of limitations applies.