The average cooking time for the black beans was 30 minutes; the typical for the kidney beans was practically 40 minutes. Of course, since these are subjective measurements and have been primarily based on my opinion of what I assume is the best cooked texture for beans, take these findings with a grain of salt . Christina and I agreed that the completed pie tastes far more like a lemon pie than a “potato pie.” In this preparation, the natural sweetness of the potatoes offsets the sharp flavors of citrus juice and zest. This dish was unlike another potato-based pie …