I should introduce you to the concept of the salad sandwich.
This recipe is for two people:
2 tomatoes
2 spring onions or half a brown onion (a lot of people can't tolerate spring onions strangely)
Half a head of butterleaf lettuce (in poverty, a quarter of an iceberg lettuce will do).
Mayonnaise
Butter
6 slices of bread
A grain of salt (also known as about a teaspoon)
Now, back in the day, this recipe called for 'wilted' lettuce and for the tomatoes to be put into boiling water for 10 seconds to get the skins off them.
We're all evolved now and realise that wilted lettuce has lost a lot of its nutrients to the free-radical process and the skin of the tomato is no harm.
So, you chop your onions (I'm one of the ones who can't tolerate the spring onions) or your spring onions finely. Chop your tomato and chop up or tear your lettuce.
Stick them all in a bowl. You want enough lettuce to be about 3 to 1 to the onions and tomatoes.
Now we come to a point which has almost caused life-long fall-outs in my family. Salad Cream or Mayonnaise?
For the purposes of peace on earth, I'm going with mayonnaise (it was decided by my mother that only a fucking lunatic would put salad cream on a salad sandwich). Mayonnaise is creamier to be fair to my mother.
Ideally you will have an assistant in this process who is buttering the bread, while you're enduring the chopping.
Anyway, the grain of salt is the secret ingredient.
You stick the tomatoes (chopped up), onions (chopped up) and lettuce (chopped up into a bowl and you throw a dollop of mayo on top. You mix it up. You will then usually decide that it needs more mayo so put another dollop in and stir again. Very important to stick the grain of salt in now too. Then you taste. But DO NOT FUCKING DARE PUT THE SPOON BACK IN OR I WILL FUCKING HUNT YOU DOWN. Adjust salt and mayo as per your taste preference.
Now, your assistant should have buttered the bread at this point, so she is prepared with her/his slices of bread. It's important that you don't over-fill these sandwiches as they're going to be moist (hence the requirement for butter).
Slice into triangles and serve with a cup of tea. Not to Auntie Anne though who prefers salad cream. She gets a ham sandwich.