Pesto

1 bunch basil leaves, washed and leaves removed from stems
2 tbs pine nuts, toasted and cooled
1/2 cup good olive oil plus more for the mushrooms
1/2 clove garlic

Place the basil, pine nuts and garlic in the food processor. Process until smoothly combined. Slowly pour the olive oil through the food processor funnel while the motor is running. For this recipe we want quite an oily pesto, you may need to add a little more oil.