I didn't plan to do this, but...
Apparently the name of the Clara/Eleven ship is "whoufflé"*. Now I'm not a shipper, me, but some things demand to be drawn...
...After Trenzalore, they talked for a long time. She wanted to make sure she was still her, beyond her million other lives, and he finally felt free to ask about her life, when earlier he was afraid his interest would make him sound like a bit too stalkerish. So she told him about her childhood, and her mum, and her mum's soufflé.
Obviously, he wanted to try the recipe.
She'd never got that good at making it, and neither was he, but it was a fun afternoon.
(Artie and Angie managed to get their dad to take them to McDonald's that evening.)
*(totally flaunting my French keyboard privilege here)