Roll edges of ahi tuna in sesame seeds.
Sear tuna in 1 Tbl. canola oil over med-high heat for 1 minute per side, then thinly slice.
Prepare hardboiled eggs.
Gently boil potatoes until just fork tender and remove from water.
Drop green beans in boiling water and blanch for 1 minute, remove to an ice bath.
Arrange salad ingredients on a platter.