basil and mint pesto

Ingredients6 courgettes sliced into 1/2-inch rounds3 tablespoons (or less) olive oil3 small cloves garlic10 (or more) mint leaves5 (or more) basil leaves1 heaping tablespoon capers, rinsed2 tablespoons pine nuts or walnuts, lightly toasted1 to 2 teaspoon red wine vinegar or white balsamic or whatever vinegar you haveSea salt and freshly ground pepper, to tasteAdditional mint [...]