Tear the sourdough into pieces and place a food processor. Process to coarse crumbs.
Heat 2 tablespoons of oil with the garlic in a medium non-stick frying pan over medium-high heat for 1 minute. Add the breadcrumbs and cook, stirring occasionally for 3 minutes or until golden. Remove from heat. Stir in the lemon rind and pine nuts. Transfer to a bowl.