JennieG said, "In Oz pb&j isn't a thing" - well it was in our house, 100 miles north of Sydney.

Why milk? Do you mean drinking a glass of milk while eating the sandwich or is there some strange, esoteric milk-related ritual which we Aussies are not privy to?

My fave PB & ? variations are always on multigrain or interesting bread and PB works well with pumpernickel too:

PB & tomato slices
PB & crunchy lettuce e.g. Cos/Romaine
PB & banana slices
PB & honey
PB & jam.

I admit I don't do the last two variations now that I am a grown up, and especially because my family all radically cut down on sugar consumption in the mid '70's.

My hubby absolutely refuses to try any PB & variations. That surprises me because he likes satay meals and also a Balinese dish called Gado Gado, a salad of slightly boiled, blanched or steamed vegetables and hard-boiled eggs, boiled potato, fried tofu and tempeh, and lontong, served with a peanut sauce dressing.