Halve the cherry tomatoes and place in a medium-sized bowl
Chop the red onion in half, and then chop each half into very fine slices.
Chop the fresh mint finely
Add the balsamic vinegar and the the hemp seed oil
Season with salt and pepper
Mix well to combine
Chill for 1/2 hour in the fridge
Sprinkle with hemp hearts just prior to serving :)