Tacos without sausage tenderloin

6 large potatoes 4 ounces queso fresco (mexican crumbly cheese) 3 tablespoons onions , chooped salt and pepper milk , if needed oil, for frying 2 dozen corn[...]

4 medium baking potatoes , scrubbed 4 -6 cups chicken broth or 4 -6 cups water 2 tablespoons mayonnaise (or less depending on taste) 6 -8 corn tortillas 2[...]

8 -10 corn tortillas (plus a few extra, in case some break) 1/2 teaspoon coarse salt , plus more for blanching 6 cups loosely packed sliced swiss chard leaves[...]