A quiche recipe is a bit like that for an omelette: you take whatever you’ve got in the fridge, freezer or pantry and turn it into something wonderful. Such was the case here.
The sour cream in this recipe makes the quiche so creamy. You can substitute bacon for ham, and you can lightly fry the onion, to soften, if you wish. You can also add tomatoes or asparagus to the top if you’re feeling a bit fancy and require extra flavour.