In a large mixing bowl, combine corn kernels, diced jalapeno, all-purpose flour, baking powder, salt, and sugar. Stir until well blended.

In a separate bowl, whisk together milk, large egg, and vegetable oil until frothy, then pour into the dry mixture.

Gently fold wet ingredients into dry mix until just combined, avoid overmixing. Let batter sit to thicken.

Heat about ½ inch of oil in a skillet over medium heat until hot enough.

Drop spoonfuls of batter into hot oil and fry for 3-4 minutes on each side until golden brown.

Remove fritters from oil to a plate lined with paper towels to absorb excess oil.