Roughly mash the tuna with a fork. Add the scallions, cheese, and lemon juice.
Mix while mashing to obtain a homogeneous mixture.
Taste, season with salt and pepper to taste. Cover with plastic wrap and refrigerate for 1 hour (it can be less, this is to ensure it absorbs the flavor well).
Serve the tuna on the slices of bread.
Nutritional Information
* * Information per 100g serving, percentage of daily values based on a 2,000 calorie diet.
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