Preparation time: a few minutes
Cooking time: none
 

1. Cut the salmon into large equal cubes. Sprinkle with olive oil.
2. Give a few grindings of fresh pepper to all sides; sprinkle with grated ginger.
3. Peel the cucumber; cut into thin strips on a mandolin.
4. Place a little marinated ginger on a slice of cucumber and roll up.
5. Place a cucumber/ginger roll on each salmon cube and fasten with a toothpick.
6. Serve as is, or with soy sauce.