Drain the tuna of oil and place the tuna and sour cream in a bowl.
Mix well to ensure there are no large chunks of tuna.
Season with salt, pepper, and lemon juice to taste.
Your mousse is now ready and can be enjoyed on a piece of fresh
toast bread or in a salad.
The tuna mousse can keep for 2 to 3 days in the refrigerator in a container with a lid.