McCain Flavorlasts - Delicious. Crisp. Stunning Hold Time. Fantastic just-cooked taste for up to 15 minutes! When you have to hold fries, you need to know theyll stand up. New McCain Flavorlasts fries have a state-of-the-art clear batter that delivers great taste. Crisp, golden brown outsides. Light, fluffy insides. All for as long as 15 minutes!