Scrub, peel and cut beets into fine matchsticks by first thinly slicing them about 1/4 inch thick using a knife or mandoline and then stacking the slices on top of each other to cut into thin matchsticks. Place in a bowl.
Peel and de-pith blood oranges, slice into thin rounds and then slice again into 1/2 inch strips. Add to bowl with beets.
Squeeze the juice from one lemon and add 1/2 c. good olive oil to an old jam jar. Season with salt and freshly ground pepper. Tighten lid and shake. Test dressing before adding to salad and adjust seasonings, if needed.
Add a little of the dressing to the beets and pears until the flavors are balanced. Mix well. Crumble over feta and sprinkle with mint.
Tip: Peel beets under running water and chop on a plastic board that can be easily rinsed for less staining. Rub coarse salt on your hands and board to remove any color.