For the few that plays RC... they've introduced a new thing called the Gourmet King.
If you play Farmville, the King is the same concept a adopting a brown cow / ugly duckling etc.
This King randomly appears in your game (or your friend's game). Once you've spotted him, he'll give you a choice to choose between Raisin, Vanilla and one of the new recipes.
So say you chose Raisin, then you post the link on your profile, which appears in your friend's Live Feed.
Your friends can then click on the "Claim your ingredients" link (Link is currently broken and but you can fix it, refer below), and they'll get your Raisin/Vanilla/Recipes depending on what had been chosen.
Fixing the link:
When you click on the link to claim the stuff, you'll arrive at a link that's "Page Not Found":
http://apps.facebook.com
/Restaurant City/foodking?i_id=faf6d62a743f8d64.....
You'll have to change
/Restaurant City/ to
/restaurantcity/ (lowercase!) and it'll work!