1 cup kalamata olives
1 cup pine nuts
1-2 TBS capers
1-2 cloves garlic
1 TBS lemon juice
1 TBS olive oil
1/2 tsp basil
1/4 tsp black pepper
Throw it all in a food processor until smooth. It helps if you process the pine nuts first before adding the other stuff, but it works out OK the other way.
Add a nice crusty bread from the bakery and you're all set. Great as a starter, or with salad as a light meal.
It's a great recipe but actually not so great for potlucks, since it's not entirely evident what it is . . . and it's sort of purply-brown in colour.
But it worked out. The party was small enough people could ask if they wanted to know what it was.