Combine flour and salt in a bowl, and stir well.
Combine eggs, milk, and 1 teaspoon oil; add to flour mixture, stirring with a wire whisk until smooth.
Pour oil to depth of 2 inches into a Dutch oven; heat to 375°.
Dip vegetables into batter; fry, a few at a time, until golden. Drain on paper towels. Serve with Ranch-style salad dressing, if desired.