4 beetroot/beets, quartered (or 200 grams/ 7 ounces baby beetroot/beet with stalks)

6 tablespoons Gefen Olive Oil

1 small celeriac, peeled and cut into fine matchsticks

juice of 1 lemon  (or about 3 tablespoons Gefen Lemon Juice)

2 tablespoons cider vinegar such as Tuscanini

2 tablespoons clear honey

2 teaspoons wasabi (or to taste)

100 grams/2 cups watercress, washed and drained, larger stalks removed

small handful of fresh herbs, [checked and] chopped (parsley, tarragon, chives)

4 smoked mackerel fillets, shredded (bones removed)