Now that we have a big family I tend to buy things in bulk. As much as it can be considered "bulk" in a London supermarket.
So what do you do for diner when you have several kilos of pink onions in a cupboard and nothing much else as far as fresh vegetables? Onion soup.
In France it is a classic hang-over cure served for breakfast when the party is winding down.
Here it was adapted from the traditonal clear broth recipe, with a roux start to give it body (and an optional glug of wine).