When making the best French fries, you must choose your potatoes wisely. Waxy or red ones will result in soggy and greasy fries, while fingerlings can soak up too much oil, which makes them taste bad as well.The key to get the crispy fries lies in the starch-moisture ratio. That’s the reason you should use high-starch potatoes such as Russets to get crispy French fries. Keep in mind that if the starch content gets too high, you will end up with too stiff fries; thus, balance is the key.