Fun question from a food obsessive: what is your favourite sandwich filling?

If I did not have Asperger's and the problems I have, I should really have entered market food research. I have always been obsessed (in a good way!) with food, and like to ask people what their favourite sandwich filling is at the moment. I try to contain myself most of the time because I realise this is a random question, and want to appear as normal as possible. But as we are all a bit 'atypical' here, I don't think I need to worry that the question is strange

So what are your favourite sandwich fillings?

What is your favourite brand of bread, and why?

I like cheese and tomato, fish salad, marmite salad, and houmous salad best.

My favourite bread is from the bakery counter at M and S, M and S wholemeal mini sub rolls, Allinson sliced bread, and seeded bread.