To a clean kitchen towel/fine tuned strainer, grate and add the squashes, remove the excess water, do not miss that or the cakes turn soggy. In a large bowl, add the grated squashes (no water), finely chopped onion, sliced scallions, all-purpose flour, 2 eggs, salt, pepper, garlic powder, dried thyme. Mix them until just combined, The batter should able to hold on its own but do not over mix. I wait for 5 mins before making patties, it will let them stay firm while frying