Cucumber Rounds Filled with Smoked Fish

• ½ smoked mackerel (or 1 tin sardines)
• 1 tbsp butter

Mix all ingredients, except the cucumber, in a food processor or mash them in a bowl using a fork. Season with salt, pepper and lemon juice. Cut the cucumber in sections the length of the apple corer. Trim away the ends.

Using the apple corer, scoop out the seeds. You can also use a thin sharp knife, for that matter. Fill the created cavity with the fish mousse and wrap the rounds in pl