These latkes are perfectly crisp on the outside and melt-in-your-mouth on the inside. The added potato starch increases their crispiness, but it is not essential. Some russet potatoes tend to be on the drier side, but to be safe, place them in a lint-free kitchen towel, fold up the edges and give them a good wring to remove excess water. Serve this the traditional way, with nondairy sour cream and applesauce.