I started to cook some beans last night following the recipe on this site for gallopinto (http://www.seriouseats.com/recipes/2012/05/gallopinto-nicaraguan-rice-and-beans-recipe.html). Per the recipe, I soaked the beans for 30 mins, brought to a boil, and simmered for 30 mins. Then I covered and forgot about them on the stove. It is now about 15 hours later. Can I just simmer them now to finish cooking, or is there something unsafe about getting halfway through cooking and forgetting about them? Is this all clear or bacteria city?