Place the onion, rinsed beans, jalapeno, garlic, salt, pepper, sugar and chili powder and cumin into a slow cooker. Pour in the water and stir to combine. Cook on High for 8 hours, adding more water as needed (I had started with 9 cups but then added about another 1-2 cups after 4 hours so next time I will just start with 10 cups and check on it at 4 hours).Once the beans have cooked, strain them, and reserve the liquid.Option 1:Mash the beans with a potato masher, adding the reserved water as needed to attain desired consistency.Option 2: Stain beans and put them with the jalapeno and onions into a blender with 1-2 cups of reserved liquid and blend. Add more liquid to get the consistency you want.