Using a knife, cut the kernels off each cob and place in a large bowl. Using the back, unsharpened side of your knife or a flat metal spatula, firmly scrape the length of each bare cob over a small bowl to release the corn milk. Add the hot sauce, lime juice and cumin to the corn milk and whisk. Pour the dressing over the corn and toss to coat.
Add the black beans, pico de gallo and a small pinch of salt to the bowl with the corn. Toss and serve chilled or at room temperature.