Crispy Whole Night Smelt with Avocado and Spring Greens

Whole night smelt fry up delicately crisp, with golden tails and sweet, tender flesh beneath a thin flour crust. Pile them over lemony greens, creamy avocado, and crunchy cucumber for a spring supper that balances hot, salty crunch with a bright, cool salad.

By Jonathan Katzman · Cooked and photographed · Recipe updated

Serves: 4 servings

Tags: gluten-free, paleo, dairy-free, nut-free, pescatarian

Crispy Whole Night Smelt with Avocado and Spring Greens

Crispy Whole Night Smelt

A light cassava-flour coating crisps quickly without hiding the delicate fish. Small batches keep the oil hot enough to produce a dry, brittle crust rather than a heavy coating.

Ingredients

  • 2 lb small whole night smelt, cleaned with heads and tails left intact
  • 3/4 cup cassava flour
  • 1 tsp fine sea salt, plus more for finishing
  • 1/4 tsp freshly ground black pepper
  • 6 cups avocado oil, or enough for 2 inches in a heavy pot
  • 1 lemon, cut into wedges

Instructions

  1. Ask the fishmonger to clean the smelt while leaving the heads and tails attached. If cleaning them yourself, remove the entrails through a small belly slit and gently remove any loose scales. Rinse briefly only as needed, then pat thoroughly dry, including the cavities.
  2. Set a wire rack over a rimmed baking sheet. Heat 2 inches of avocado oil in a deep, heavy pot to 350–360°F, keeping the pot no more than half full.
  3. Mix the cassava flour, salt, and pepper in a shallow dish. Dredge only the fish for the next batch, shaking off excess flour so the coating is thin.
  4. Carefully lower a few fish into the oil without crowding. Fry for 3–5 minutes, turning if necessary, until pale golden, crisp at the fins and tail, and opaque through the thickest part. The flesh should reach 145°F; check a larger fish with a thin-tip thermometer.
  5. Lift onto the rack and immediately season lightly with salt. Let the oil return to temperature before coating and frying the next batch.
  6. Serve immediately with lemon wedges, keeping the fish above rather than mixed into the dressed salad.

Notes

  • Small smelt are commonly eaten whole, including their crisp heads and fine bones. Remove the backbone while eating if preferred; larger fish may have less delicate bones.
  • If the coating remains pale but the fish is already cooked, increase the oil temperature slightly for the next batch rather than extending the cooking time.

Lemony Avocado and Spring Greens Salad

Avocado gives the salad richness without a heavy dressing, while lemon and bitter leaves cut through the fried fish. Cucumber supplies a cool crunch beneath the warm smelt.

Ingredients

  • 5 oz spring salad greens, including arugula or baby lettuces
  • 1 cup thinly sliced radicchio
  • 2 Persian cucumbers, chopped
  • 1 large ripe avocado, diced
  • 1/2 cup cherry tomatoes, halved, optional
  • 1/4 cup flat-leaf parsley leaves, roughly chopped
  • 2 tbsp fresh lemon juice
  • 3 tbsp extra-virgin olive oil
  • 1/4 tsp fine sea salt, plus more to taste
  • 1/8 tsp freshly ground black pepper

Instructions

  1. Wash and thoroughly dry the greens and radicchio. Combine with the cucumber, parsley, and tomatoes, if using, in a large bowl.
  2. Whisk the lemon juice with the olive oil, salt, and pepper.
  3. Just before serving, add the avocado and enough dressing to lightly coat the salad. Fold gently, allowing a little avocado to soften into the dressing without crushing all the pieces.
  4. Taste for salt and lemon. Divide among shallow bowls, leaving the salad loose rather than compressed.

Notes

  • In early April, omit the optional tomatoes unless you find flavorful ones; the radicchio supplies color and a pleasant bitter edge.
  • Keep the greens very dry and dress at the last moment so the base stays lively beneath the fish.

Overall Timing / Workflow

Preparing the salad before frying lets the smelt go straight from the rack to the table while their coating is at its crispest.

Instructions

  1. 0:00 — Clean and thoroughly dry the smelt. Wash and dry the salad greens.
  2. 0:15 — Prepare the cucumber, radicchio, parsley, and dressing. Set out serving bowls and a draining rack.
  3. 0:20 — Begin heating the frying oil. Mix the flour coating and cut the lemon wedges.
  4. 0:25 — Fry the smelt in batches, dredging each batch immediately before it enters the oil.
  5. As the final batch fries, cut the avocado and dress the salad. Divide it among bowls, then top with the fish and serve immediately.

Plating

A loose stack shows off the whole fish and limits contact with the moist salad, preserving more of the crisp crust.

Instructions

  1. Mound the salad in wide, shallow bowls.
  2. Stack the smelt loosely across the center, alternating their direction with heads and tails visible.
  3. Finish the fish with a small pinch of salt and place lemon wedges alongside. Squeeze lemon over individual bites rather than soaking the entire stack.

Leftover Path

Keeping fish separate from the salad prevents the crust from becoming saturated. Dry oven heat restores some crispness without additional frying.

Instructions

  1. Refrigerate leftover fish separately from the salad within 2 hours. Eat within 1–2 days.
  2. Reheat the fish on a rack over a baking sheet at 400°F for 6–10 minutes, until crisp and heated to 165°F.
  3. Use undressed leftover vegetables for a fresh salad. Eat already dressed avocado salad by the following day; it will soften and is best served separately from the reheated fish.