Swedish Meatballs from the Londoner

If you've got a blog or read blogs, you know The Londoner. The other day she posted a recipe for Swedish meatballs, and I had to go for it!

Now...I used beef meatballs instead of pork, cos that's all they had in Tesco, I used grainy mustard and olive oil instead of butter but it turned out freaking awesome! But it is very rich so you don't need a big portion of it. I still haven't figured out what it goes best with...any suggestions?