Add the grated zucchini and turnip to a strainer lined with paper towel. Sprinkle and toss with salt and set over a bowl for 15-20 minutes.
Heat a waffle iron over medium-low heat. Make sure your waffle iron is clean or you risk the waffles burning!
Using paper towel or the back of a wooden spoon, drain out the liquid and discard. Wipe out the bowl with paper towel and add the grated veggies, eggs, cheese, spices, and lemon zest. Mix well until combined.
Preheat the oven to 350 and place a baking rack over a cookie sheet in the centre of the oven.
When the waffle iron is hot, add 1/2 cup batter to the centre and close. 1/2 cup of batter should yield 6 4” waffles on a standard 9” round waffle iron. Cook until the steam has slowed, and check progress. Close and cook longer if necessary. The waffle should be brown but not burnt and set enough to hold its shape.
Carefully remove the waffle. Use the end of a spatula and carefully lift underneath. It will be soft but should hold together. Gently place it on top of the wire rack in the oven. Repeat the process until the batter is all used up.
Remove waffles from the oven and serve warm with your choice of toppings!