Keto Batter-Fried Fish (perfect for Lent)

By beejay March 25, 2026
This is THE keto fried fish recipe you want, to replicate that flour batter fish fry experience. The ingredients used in this batter replicates the standard flour batter fish fry, using egg white protein powder for a crispy coating that stays on while cooking.
Keto Batter-Fried Fish (perfect for Lent)

Chef’s notes

BONUS: I’ve included my fast & easy recipe for sugar-free tartar sauce, as well (if you’re into that).

This recipe is per 1/2 lb of fish, so double it for every 1 lb of fish you need to make. It is not suitable for air frying or baking. Be careful not to add baking powder to the batter mix, as it can make everything bitter.

Full recipe with more notes at https://ketolish.us/keto-fried-fish-recipe/

Details

  • ⏲️ Prep time: 20 min
  • 🍳 Cook time: 10 min
  • 🍽️ Servings: 2

Ingredients

  • 1/2 lb of firm fish, skin & bones removed
  • Salt & freshly cracked pepper to taste
  • 2 eggs
  • 1/4 cup egg white protein powder
  • Dash of sugar-free seasoning such as Old Bay (optional)
  • Fat for frying (avocado oil, flavorless refined olive oil, coconut oil, tallow/lard)
  • Sugar-free tartar sauce and/or lemon wedges, for serving

Directions

  1. Make sure your fish has thawed, if using frozen. You can quickly thaw vacuum-sealed fish under running water for a few minutes.
  2. Rinse fish and pat dry, then cut into even sized strips or nugget pieces for frying.
  3. Sprinkle both sides of the fish pieces with salt & freshly cracked pepper to taste, and set aside.
  4. In a shallow bowl or deep plate, pour the egg white protein powder and spread it around the bottom of the dish. In a second bowl, crack the eggs and whisk well.
  5. Place enough fat in a non-stick skillet to cover the bottom at least 1/4 inch. Heat on medium-low until a temperature of about 350 F is reached.
  6. Quickly dip the fish pieces one at a time into the egg wash, then dredge the fish in the dry mixture.
  7. Place each piece of coated fish into the hot oil and fry 1.5 to 3 minutes per side until it reaches an internal temperature of 160 F.
  8. Place fried fish on paper towel-lined platter or wire rack to drain the oil.
  9. Serve hot with lemon wedges and/or sugar-free tartar sauce.
  10. SUGAR-FREE TARTAR SAUCE RECIPE (per person, multiply as needed):
  11. 2-3 tablespoons mayonnaise, 1 tablespoon no sugar-added sweet relish or dill relish (Mt. Olive makes a good one), Pinch of dill weed, 1/8 teaspoon onion powder, Dash of curry powder (optional)
  12. Make it: Combine all ingredients in a small jar or dish and mix well. For best flavor, chill 30-60 minutes in fridge before serving.
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