To make Tuna Beetroot Tortilla Wraps, follow these simple steps:

1. Prepare the Ingredients: Start by cooking the beetroot if not pre-cooked, and let it cool before grating.
2. Mix the Filling: In a bowl, combine the drained tuna, grated beetroot, red onion, half the Greek yogurt (or mayonnaise), Dijon mustard (if using), and season with salt, pepper, and fresh herbs.
3. Add Lemon Juice: Squeeze fresh lemon juice into the tuna mixture for extra flavor and mix well.
4. Prep the Tortilla: If desired, lightly toast each tortilla on a dry skillet for about 1-2 minutes on each side for a warm, pliable texture.
5. Assemble the Wraps: Lay one tortilla flat and spread a layer of the remaining Greek yogurt (or mayonnaise) evenly on top. Add a handful of leafy greens in the center.
6. Fill the Wrap: Spoon a generous amount of the tuna and beetroot mixture onto the leafy greens.
7. Wrap It Up: Fold the sides of the tortilla over the filling, then roll from the bottom up tightly to create a sealed wrap.
8. Cut and Serve: Slice the wraps in half diagonally for easier eating and serve immediately, or wrap them in foil for later enjoyment.