Add flour and seasoning salt to a medium sized bowl and whisk to combine. Add water and milk and whisk until well combined.
Add oil to a heavy bottom skillet. Heat over medium-high to 350 degrees.
Dip pickles in batter and let excess drip off. Carefully place in hot oil, turning about every 30 seconds until well browned on both sides. Cook 6-8 at a time. Place on a paper towel lined wire rack to drain.