Latkes with yogurt and date molasses

Peel the potatoes, sweet potatoes and calabacitas. Using the large holes of a box grater or food processor blade, grate the potatoes, sweet potatoes, calabacitas and onion. Place all of the grated vegetables in a large strainer set over a bowl and sprinkle with about a teaspoon of salt. Using your hands or a large spoon, mix to disperse the salt and let sit for 45 minutes. Squeeze it and press it down a bit to help drain the liquid as much as possible.