Drain water from the canned tuna and add to a bowl.. Add 3-4 Tbsp Mayonnaise. You can add more or less according to preference. (See notes). Stir the tuna well, so that it becomes easily spreadable.. Add the mustard and minced shallots.. Use a fork to mix and stir the tuna to get it more smooth and spreadable. I like it just slightly chunky. If you want it extremely smooth, mix further.. Once the texture is to your liking, add in the freshly chopped dill, salt, pepper, and paprika. Stir till thoroughly incorporated.. Chill the tuna spread for at least 30 minutes in the fridge for best results. The filling tastes better chilled.. Apply a thin layer of Mayo on each slice of Un-toasted bread..