- Coat each side of the tuna in sesame seeds until well covered to start the pink grapefruit tataki.
- Heat a tsp of olive oil in a non-stick frying pan over a high heat, then sear the top, bottom and each side of the tuna for 30 seconds.
- Toss the grapefruit, radish and fennel in the juice, olive oil and grapefruit zest and arrange on a plate.
- Slice the tuna into 2mm thick slices and place on salad.
- Garnish with reserved fennel fronds.
Recipe by Jo Feehan of My Second Helping