Crack the eggs into a bowl. Add salt and shake well with a fork. Cut separately: onion into cubes, tomato into semi-circular slices. Heat the oil in a frying pan. Over low heat, cook the onion until translucent. Add tomatoes; increase heat to medium.
Fry for another 2-3 minutes, or more, if there is a lot of juice in the tomatoes, until most of it has evaporated. Pour in the egg mixture and fry, stirring, for a couple more minutes until all the eggs are “set” (no longer runny).
Extras you can add to the scrambled eggs (after the tomato):
— a couple of sliced sausages
— ham, cut into cubes or bars
— fried bacon stripes
— cut boiled potato (or two)
— cut bread, maybe yesterday’s
— sweet peppers, cut into strips
— sweet corn or peas
— cubed or grated cheese (add the cheese at the same time as the eggs)
— herbs