01 - Grate the potatoes and onion using a box grater or food processor.
02 - Place the grated mixture in a clean kitchen towel and wring out as much liquid as possible.
03 - Transfer the drained mixture to a large bowl. Add eggs, flour, salt, and pepper; mix until fully incorporated.
04 - Warm vegetable oil in a large skillet over medium-high heat.
05 - Drop heaping tablespoons of the mixture into the hot oil, gently flattening with a spatula.
06 - Cook latkes for 3 to 4 minutes per side, or until crisp and golden brown.
07 - Transfer cooked latkes to a paper towel-lined plate to absorb excess oil.
08 - Continue frying remaining batter, adding oil as necessary. Serve warm with sour cream or applesauce if desired.