Charred Tuna Sashimi w/ Brown Buttered Onion

Charred Tuna Sashimi w/ Brown Buttered Onions from Feastly on Vimeo.

Want to make the recipe in the video above? We’ve compiled the simple instructions below. Try it out and let us know how you like it!

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Charred Tuna Sashimi w/ Brown Buttered Onion

by Chef Tu David Phu

Want to impress your friends with little to no effort? This is the perfect recipe for you. All it takes is just a few tools and sushi-grade tuna.


  • Skillet
  • BlowTorch


  • 1/4 lb fresh tuna, center cut loin
  • 1 whole onion
  • 1/2 lemon
  • 3 tbsp salt
  • 1/2 lb butter
  • 1/4 c. neutral frying oil
  • Togarashi for garnish

Prepare Brown Buttered Onions

  • Peel & half onions. Then, very carefully, slice razor thin using a mandolin.
  • Pre heat skillet with oil. Then start browning onions, stirring and folding often. This can take a while so be patient!
  • Once onions start to brown, add butter and brown butter with onion.
  • Season with a few pinches of salt. Be sure to taste it!

Prepare Tuna

  • Remove tuna skin and slice into sashimi sized slices.
  • Tip: cut against the grain.

Assemble & Plate Dish

  • Season tuna with salt and  dress tuna with fresh squeeze of lemon.
  • Garnish with rosettes of warm, brown-buttered onions
  • Drizzle brown butter from skillet
  • Using a blowtorch, brûlée Tuna for 5 seconds on all sides.
  • Generously sprinkle seaweed seasoning.
  • Serve!
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